ccrandall77
Aug 11, 03:36 PM
You know as well as I do that has to do with the signal, not whether it is Code division or time division. If you claim differently, show me reputable references.
Uh, actually tower handoff has relatively little to do with signal... it's two totally different things.
Want a reference? Is the IEEE reputable enough for you?
http://www.ieee.or.com/Archive/diversity_in_3g/diversity_in_3g.pdf
Page 6: Why CDMA? Allows soft handoffs.
Enuff said.
Care to back up any of your assumptions with reputable references?
Uh, actually tower handoff has relatively little to do with signal... it's two totally different things.
Want a reference? Is the IEEE reputable enough for you?
http://www.ieee.or.com/Archive/diversity_in_3g/diversity_in_3g.pdf
Page 6: Why CDMA? Allows soft handoffs.
Enuff said.
Care to back up any of your assumptions with reputable references?
brianus
Sep 14, 01:10 PM
This is NEW because it is on a 3 hour weekday morning telecast. That makes it NEW and NEWS. Nothing about content. I NEVER watch American Idol. You are judgemental.
Well he did kind of have a point there at the end. You could stand to tone down your use of enormous, colored type if you don't want your posts "judged" as having an emotional content beyond their actual words.
Well he did kind of have a point there at the end. You could stand to tone down your use of enormous, colored type if you don't want your posts "judged" as having an emotional content beyond their actual words.
Glen Quagmire
Aug 6, 02:12 PM
I have tried the vista Beta, and ran in via BootCamp, so no different hardware. Tiger is miles ahead of vista.
Put simply: Tiger Works.... Vista Crashes and takes 2 years longer than tiger to do the same task.
I don't care how it looks, i don't care about see-through windows. I want something that works. Tiger gives me that.... and i hope leopard makes it even better. Tiger is ahead of the competition, hopefully leopard will be further forward, beating Vista to where it should be... In a beige, boring box:D
So, you're comparing a mature product (Tiger) to one that's still in beta and which by all accounts has plenty of outstanding issues before it's ever released (Vista)?
Not the fairest of comparisons, is it? Perhaps we should compare the latest of the Leopard builds with the latest Vista build for a more valid comparison of the relative position of the two OSs?
"Beige, boring box". Have you seen some of the hideous case designs that PC companies come out with? Not beige and far from boring (in a bad way). Apple's industrial design and grasp of asthetics and ergonomics is light years ahead.
Put simply: Tiger Works.... Vista Crashes and takes 2 years longer than tiger to do the same task.
I don't care how it looks, i don't care about see-through windows. I want something that works. Tiger gives me that.... and i hope leopard makes it even better. Tiger is ahead of the competition, hopefully leopard will be further forward, beating Vista to where it should be... In a beige, boring box:D
So, you're comparing a mature product (Tiger) to one that's still in beta and which by all accounts has plenty of outstanding issues before it's ever released (Vista)?
Not the fairest of comparisons, is it? Perhaps we should compare the latest of the Leopard builds with the latest Vista build for a more valid comparison of the relative position of the two OSs?
"Beige, boring box". Have you seen some of the hideous case designs that PC companies come out with? Not beige and far from boring (in a bad way). Apple's industrial design and grasp of asthetics and ergonomics is light years ahead.
Glen Quagmire
Jul 14, 03:31 PM
Why? What are the advantages/disadvantages to having it higher or lower in the case? Does the weight distribution matter?
My PC (in a full tower case) has the PSU at the bottom. Having had a case with the PSU at the top before, it seems more stable with all that weight in the base of the case. It also makes it easier to reach around the back for cables, as I don't need to stretch as far.
I would hope that Apple change the case design a bit more than this. I'm not a huge fan of the cheese grater design. However, it wouldn't prevent me putting in an order for the 2.67Ghz model (exactly when is another matter). It would be nice to have a couple more drive bays and USB ports as well.
The X1800 graphics card appears (from a brief look at the review sites) to be a mid-range card. Hopefully Apple will offer a high-range card (GF7900, X1900) as an option.
My PC (in a full tower case) has the PSU at the bottom. Having had a case with the PSU at the top before, it seems more stable with all that weight in the base of the case. It also makes it easier to reach around the back for cables, as I don't need to stretch as far.
I would hope that Apple change the case design a bit more than this. I'm not a huge fan of the cheese grater design. However, it wouldn't prevent me putting in an order for the 2.67Ghz model (exactly when is another matter). It would be nice to have a couple more drive bays and USB ports as well.
The X1800 graphics card appears (from a brief look at the review sites) to be a mid-range card. Hopefully Apple will offer a high-range card (GF7900, X1900) as an option.
babyj
Sep 19, 10:14 AM
I don't understand all the hype over the core 2 duo chip vs the core duo chip. They are basically the same chip. You will barely notice any difference with same speed core 2 duo over a same speed core duo.
Even when I've made big processor jumps before I've never noticed any increased performance that made a difference to me. Adding more RAM has made a massive difference though and probably would for a lot of people.
Even when I've made big processor jumps before I've never noticed any increased performance that made a difference to me. Adding more RAM has made a massive difference though and probably would for a lot of people.
CFreymarc
Apr 6, 03:33 PM
I'd rather buy like a tablet running a modified version of Windows 7 or something similar. Not an Android tablet. Unfortunately I don't think I've seen anything like that released :(
What you are talking about are these "tablet netbooks" running on the Intel Atom. You can swing the display so it closes to hide the keyboard while still showing the screen. Models like ASUS Eee PC T101MT-EU17-B and Lenovo Ideapad Tablet are what you are talking about.
IMO these "tablet netbooks" are the biggest sleeper product out there. Cheaper than you typical iPad, runs Windows apps and are quite compatible. I have one myself alongside with my iPad for development and IT issues since this is what most whom I work with use. I'm impressed by both.
What you are talking about are these "tablet netbooks" running on the Intel Atom. You can swing the display so it closes to hide the keyboard while still showing the screen. Models like ASUS Eee PC T101MT-EU17-B and Lenovo Ideapad Tablet are what you are talking about.
IMO these "tablet netbooks" are the biggest sleeper product out there. Cheaper than you typical iPad, runs Windows apps and are quite compatible. I have one myself alongside with my iPad for development and IT issues since this is what most whom I work with use. I'm impressed by both.
mBox
Apr 6, 08:17 AM
Problem is, its still Final Cut and will still suck at managing media.I work in all three worlds with NLE (Avid, Apple & Adobe). If your know what your doing, then Media Management should be as easy as pie. Now do you have something specific that irks you about FCP? For starters I instruct at a local college in the evenings. I first burn it in my students heads that they need to use an separate drive for this app.
Im just throwing in the obvious of course ;)
Im just throwing in the obvious of course ;)
bibbz
Jun 9, 01:34 PM
WOW Awesome Thank you so much for the info and the fast response.
I like employees that are on message boards like this and respond to questions like these and taking the time out of their day. Thanks.
So just to make sure. If I do go along with the Trade In on Tuesday I don't have to give them my phone then? when I go back to pick it up then they will take it?
Thanks
NP bro, glad i could help!
Don't do your trade in Tuesday, if you do, yes you have to give them the phone right then. Just have it appraised Tuesday so you know how much you can get for it. You want to actually do it they day you get the iPhone4 and give them your old one.
Now if you are afraid the values will drop as launch day gets closer and you want to be locked in with the quote you get Tuesday, then you will have to give it to them on Tuesday.
I like employees that are on message boards like this and respond to questions like these and taking the time out of their day. Thanks.
So just to make sure. If I do go along with the Trade In on Tuesday I don't have to give them my phone then? when I go back to pick it up then they will take it?
Thanks
NP bro, glad i could help!
Don't do your trade in Tuesday, if you do, yes you have to give them the phone right then. Just have it appraised Tuesday so you know how much you can get for it. You want to actually do it they day you get the iPhone4 and give them your old one.
Now if you are afraid the values will drop as launch day gets closer and you want to be locked in with the quote you get Tuesday, then you will have to give it to them on Tuesday.
moochermaulucci
Apr 8, 12:50 AM
How does that create demand? Instead of actually getting the sale, you deny a sale and hope it "creates demand" so that they'll come back and buy it in fear? Especially considering that they could have just purchased it in the first place and avoided the whole issue. Actually selling out the product and then having no more available in stock would create demand AND generate revenue. Doing what they did would generate SOME revenue and likely cause customers to look elsewhere for iPads.
Edit: This isn't to say that I don't recognize the concept of reaching quotas for the day and saving products for the next day's quota. That's a different argument. What I'm referring to is that this is likely not about demand but about selfishly wanting to meet quotas and turning away customers in the process. Not creating demand. It's immoral, but business/retail and morality don't always work so well together.
Now, now, we'll have none of that common sense in these here forums.:D
Well said, btw.
Edit: This isn't to say that I don't recognize the concept of reaching quotas for the day and saving products for the next day's quota. That's a different argument. What I'm referring to is that this is likely not about demand but about selfishly wanting to meet quotas and turning away customers in the process. Not creating demand. It's immoral, but business/retail and morality don't always work so well together.
Now, now, we'll have none of that common sense in these here forums.:D
Well said, btw.
Teddy's
Jul 20, 12:47 PM
"The-Most-Powerful-machine-more-powerful-than-Pentium1-2-3-4-Merom-Conroe-Norah-Or-was-it-Jonah-or-Yonah-Xeon-Neon-Freon-Argon-Vista-Panther-JamesBond-MrBean-Xmen-Batman-and-Jesus-put-together"
And more famous than the Beatles...
And more famous than the Beatles...
Menopause
Mar 22, 12:58 PM
"The first iteration of Galaxy Tab 10.1 measured in at 246.2 x 170.4 x 10.9 mm and weighed 599g; this new, slimmer version is 256.6 x 172.9 x 8.6 mm and 595g."
We lost 4 grams WAHAHAHAHA !
We lost 4 grams WAHAHAHAHA !
Piggie
Apr 8, 07:13 AM
I don't know if anyone has explained Best Buy's actions at all and why they would hold back on selling stock the have yet.
I run a branch for a construction supply company and am judged based on daily and monthly goals.
It doesn't matter if I do three times my monthly goal this month if I don't hit goal at all next month. It doesn't make sense but it is the way business works. I have held orders that come in at the end of the month for the beginning of the next if I have already hit this month's goal so that I get a head start on next month's.
For the manager at Best Buy he probably felt that it served him better to the corporate big wigs if he hit his goal every day rather than pass his goal one day and not reach it the next.
Is it best for the COMPANY or for the CONSUMER? No... But in this world of sales and numbers managers tend to do what will make their bosses happy, which is to make sure that when they check the numbers on the spreadsheet every day they hit their numbers and don't get yelled at.
100% agree with you and people need to realise how stupid people high up the ladder are, and out of touch with reality with these things, which then cause the behaviour you have explained to happen.
Actually by selling more than your expected quota this month may even end up with your expected quota being increased for future months.
Effectively shooting yourself in the foot.
To put it in it's simplest form, say someone paid you $5 to walk to the shops and buy them a pizza, and give you 15 mins for the journey. You go the task, get your $5 dollars and everyone is happy.
Now, once you decide to jog a little and arrive back in 10 mins, wow that's great, so much quicker. but from now on, will will only allow you 11 mins to get the pizza for the $5 payment.
Then you are silly enough to run a little one day and come back in just 5 mins, wow, this is an improvement. Head office have now decided to allow you 6 mins to perform the task for your $5.
How stupid are you, when you could have been walking all this time and still of had your original 15mins for your $5 payment.
Perhaps you could of run in just 5 mins, but you really should of stopped and chatted to someone for 10 mins to use your allowed time up.
I run a branch for a construction supply company and am judged based on daily and monthly goals.
It doesn't matter if I do three times my monthly goal this month if I don't hit goal at all next month. It doesn't make sense but it is the way business works. I have held orders that come in at the end of the month for the beginning of the next if I have already hit this month's goal so that I get a head start on next month's.
For the manager at Best Buy he probably felt that it served him better to the corporate big wigs if he hit his goal every day rather than pass his goal one day and not reach it the next.
Is it best for the COMPANY or for the CONSUMER? No... But in this world of sales and numbers managers tend to do what will make their bosses happy, which is to make sure that when they check the numbers on the spreadsheet every day they hit their numbers and don't get yelled at.
100% agree with you and people need to realise how stupid people high up the ladder are, and out of touch with reality with these things, which then cause the behaviour you have explained to happen.
Actually by selling more than your expected quota this month may even end up with your expected quota being increased for future months.
Effectively shooting yourself in the foot.
To put it in it's simplest form, say someone paid you $5 to walk to the shops and buy them a pizza, and give you 15 mins for the journey. You go the task, get your $5 dollars and everyone is happy.
Now, once you decide to jog a little and arrive back in 10 mins, wow that's great, so much quicker. but from now on, will will only allow you 11 mins to get the pizza for the $5 payment.
Then you are silly enough to run a little one day and come back in just 5 mins, wow, this is an improvement. Head office have now decided to allow you 6 mins to perform the task for your $5.
How stupid are you, when you could have been walking all this time and still of had your original 15mins for your $5 payment.
Perhaps you could of run in just 5 mins, but you really should of stopped and chatted to someone for 10 mins to use your allowed time up.
hulugu
Apr 27, 11:19 PM
Can you name ONE person here who suggested its a forgery?
Right, you typically dig through government documents looking for goofy layers (or object) and you're just asking questions about this one document which happens to prove that Obama was born in the United States.
What I find remarkable is you were one of the ones arguing that all Obama has to do is show the long-form document and now that the White House has, you're still arguing about the document. It's a fair question to wonder why there are layers in a document, but you can't honestly say that such a question doesn't lead down a path that would logically come to the conclusion that a document was a forgery.
Am I a liar? I have no idea if you're doing it right, or if you are even using Illustrator, or if the PDF was replaced with a single-layer/object one. Just do a Google search for 'obama birth certificate layers' and you'll see that I'm not the only one who downloaded a file with multiple layers or objects or whatever.
It seems like it changes depending on the settings and edition of Creative Suite you have.
I'm quite sure that my rare posts in this forum have little to do with what you and your army think of this forum...besides, my milkshake brings all the boys to the yard.
Yeah it does. ;)
It'd be fascinating to see how much people cared about 'layers' if the documents in question related to Bush's National Guard deployment or something similar. ;) Haha, no bias here boys!
The difference between me and you is that I'd want an explanation in either account. ;)
Those hypotheticals make for easy arguments. You do have a bias against Obama and you should just admit it. When a document comes around that runs counter to your worldview make sure you ask the same kinds of questions.
Right, you typically dig through government documents looking for goofy layers (or object) and you're just asking questions about this one document which happens to prove that Obama was born in the United States.
What I find remarkable is you were one of the ones arguing that all Obama has to do is show the long-form document and now that the White House has, you're still arguing about the document. It's a fair question to wonder why there are layers in a document, but you can't honestly say that such a question doesn't lead down a path that would logically come to the conclusion that a document was a forgery.
Am I a liar? I have no idea if you're doing it right, or if you are even using Illustrator, or if the PDF was replaced with a single-layer/object one. Just do a Google search for 'obama birth certificate layers' and you'll see that I'm not the only one who downloaded a file with multiple layers or objects or whatever.
It seems like it changes depending on the settings and edition of Creative Suite you have.
I'm quite sure that my rare posts in this forum have little to do with what you and your army think of this forum...besides, my milkshake brings all the boys to the yard.
Yeah it does. ;)
It'd be fascinating to see how much people cared about 'layers' if the documents in question related to Bush's National Guard deployment or something similar. ;) Haha, no bias here boys!
The difference between me and you is that I'd want an explanation in either account. ;)
Those hypotheticals make for easy arguments. You do have a bias against Obama and you should just admit it. When a document comes around that runs counter to your worldview make sure you ask the same kinds of questions.
Yamcha
Mar 26, 11:36 AM
Yay, this is what I've been looking forward to, forget iOS devices :P. I'm sorry but I use my computer the most everyday.. Anyway I really hope we see it soon..
�algiris
Mar 31, 02:59 PM
so what Apple FAD are you talking about?
It's technology when it's Google.
It's a FAD when it's Apple?
What the **** are you talking about?
He is extremely biased.
It's technology when it's Google.
It's a FAD when it's Apple?
What the **** are you talking about?
He is extremely biased.
cult hero
Mar 26, 03:59 PM
Details found here :
http://www.h-online.com/open/news/item/Apple-removes-Samba-from-Mac-OS-X-10-7-Server-1215179.html
Gist of it :
- less features than Samba
- no more Active Directory Services
- Just file sharing now.
Samba developers have also noted that the true motive behind this move might not be the GPLv3 per say, but a more global move away from the GPL. Is Apple moving to close the source on more and more of OS X ?
Anyway, Samba v4 could have given them all the "features" they implemented and much more. Their own in-house version won't necessarily be better just because it's written by Apple. The Samba team does a great job with what Microsoft puts out as documentation (if you can even call it that).
Note that from the article, this change only impacts OS X Server. The client was already an in-house solution.
Ick. None of that is good news. Although their current implementation of Samba is old anyway. Things aren't going to get worse... they're just not going to get any better. That's a bummer.
Looks like I'll continue using Linux for my domain controllers then. (Not that I take issue with this.)
Personally, I think it's GPL3. Apple isn't the only company reacting negatively to it. Who knows though? I certainly don't.
On the upside that means Apple won't advertise that their server will work as a domain controller anymore which they do now despite the fact that nowhere do they say, "Hey, only old NT4 style domains that don't work for modern Windows clients."
http://www.h-online.com/open/news/item/Apple-removes-Samba-from-Mac-OS-X-10-7-Server-1215179.html
Gist of it :
- less features than Samba
- no more Active Directory Services
- Just file sharing now.
Samba developers have also noted that the true motive behind this move might not be the GPLv3 per say, but a more global move away from the GPL. Is Apple moving to close the source on more and more of OS X ?
Anyway, Samba v4 could have given them all the "features" they implemented and much more. Their own in-house version won't necessarily be better just because it's written by Apple. The Samba team does a great job with what Microsoft puts out as documentation (if you can even call it that).
Note that from the article, this change only impacts OS X Server. The client was already an in-house solution.
Ick. None of that is good news. Although their current implementation of Samba is old anyway. Things aren't going to get worse... they're just not going to get any better. That's a bummer.
Looks like I'll continue using Linux for my domain controllers then. (Not that I take issue with this.)
Personally, I think it's GPL3. Apple isn't the only company reacting negatively to it. Who knows though? I certainly don't.
On the upside that means Apple won't advertise that their server will work as a domain controller anymore which they do now despite the fact that nowhere do they say, "Hey, only old NT4 style domains that don't work for modern Windows clients."
jmsait19
Sep 19, 02:46 AM
(2) Those of us that buy Macbook Pros are throwing down $2500+ for top-of-the-line laptops. Sub-$1000 laptops have had a better processor than Apple's flagship laptops for nearly a month now. If you can still defend Apple after this, do a reality check on the fanboyism.
You should thouroughly read a post before you quote and attempt to disprove it, or in this case, call the poster a name like fanboy...
The poster before you mentioned how these "sub-$1000" laptops are JUST starting to ship THIS WEEK, not a month ago as you claim. If Apple were to release new MBP on Monday and announce them as "shipping today," then Apple would only mere days behind, not a month.
Sincerely,
Fanboy
P.S. If you skipped to the end of this post again and are about to reply angrily, please go back and read the post as you will better understand what I am trying to say...
You should thouroughly read a post before you quote and attempt to disprove it, or in this case, call the poster a name like fanboy...
The poster before you mentioned how these "sub-$1000" laptops are JUST starting to ship THIS WEEK, not a month ago as you claim. If Apple were to release new MBP on Monday and announce them as "shipping today," then Apple would only mere days behind, not a month.
Sincerely,
Fanboy
P.S. If you skipped to the end of this post again and are about to reply angrily, please go back and read the post as you will better understand what I am trying to say...
Nuvi
Apr 11, 12:19 AM
Myspace was never cool.
Okay, okay, so they have done NAB (they've never done AES, though, that I'm certain). But still: They pulled out of everything in the last couple years. Why come back to NAB? Why not just do a small-scale announcement outside of NAB's timeframe so as to maximize press?
Also, nobody answered my initial question. Why the idle timer? There's no point!
Because presenting something ground breaking at NAB will give you huge positive push within the industry. Lets face the facts, FCP needs that huge positive push right here and right now. Apple is sliding the slippery slope at speed of light if they don't bring it with this new version of FCP.
Okay, okay, so they have done NAB (they've never done AES, though, that I'm certain). But still: They pulled out of everything in the last couple years. Why come back to NAB? Why not just do a small-scale announcement outside of NAB's timeframe so as to maximize press?
Also, nobody answered my initial question. Why the idle timer? There's no point!
Because presenting something ground breaking at NAB will give you huge positive push within the industry. Lets face the facts, FCP needs that huge positive push right here and right now. Apple is sliding the slippery slope at speed of light if they don't bring it with this new version of FCP.
zin
Mar 22, 12:52 PM
A 5 gram drop in weight? And people said Apple's effort at reducing weight was bad. :rolleyes:
Lord Blackadder
Mar 22, 01:32 PM
I'm very specific on what I praise Reagan for... including his excellent ability to speak eloquently about the values of the free market, small government, etc. I've repeatedly said that he was far from perfect... but it's less easy for you to argue with reality when you can just make up my positions on one man... isn't it?
Reagan was not about small government at all. He massively increased government spending and the size of the military. He may have spoken eloquently about small government, but they were empty words. There isn't much to praise there.
Speaking of making up positions, almost every post you make contains a micharacterization of what other people say, but phrased as a question so as to make it seem more innocent.
Reagan was not about small government at all. He massively increased government spending and the size of the military. He may have spoken eloquently about small government, but they were empty words. There isn't much to praise there.
Speaking of making up positions, almost every post you make contains a micharacterization of what other people say, but phrased as a question so as to make it seem more innocent.
NJRonbo
Jun 14, 06:24 PM
You know what?
Third friggin' RS store I have called and ALL
say that even if you get a PIN tomorrow it is
no guarantee of a phone.
I think I am going to order directly from Apple.
Third friggin' RS store I have called and ALL
say that even if you get a PIN tomorrow it is
no guarantee of a phone.
I think I am going to order directly from Apple.
Tomaz
Aug 7, 03:40 PM
The top secret features better be REALLY good, this was disappointing and nothing was really new! Cupertino started it's photocopiers.... (The Vista banners are an actual joke after this keynote) :(
triceretops
Apr 6, 08:36 PM
I would have bought one of the current generation if I could have gotten a 512 GB SSD.
4GB MBP i7 500GB 7200RPM
G4 400
G4 867
4GB MBP i7 500GB 7200RPM
G4 400
G4 867
ccrandall77
Aug 11, 01:59 PM
As I said before GSM has 81% of the market. UMTS (W-CDMA) enable hand-over back and forth UMTS and GSM. CDMA2000 can not do hand-over between GSM and CDMA2000. (See Wikipedia (http://en.wikipedia.org/wiki/W-CDMA): "The CDMA family of standards (including cdmaOne and CDMA2000) are not compatible with the W-CDMA family of standards that are based on ITU standards.")
Hence all networks that has GSM will transfer to UMTS since this decrases their initial investment as they transfer from 2/2.5G to 3G. Changing network standad is expensive, but the GSM/EDGE marketshare has been growing in US and will most likely continue to grow. At the same time CDMA is non-existant in europe.
The conclusion is simple - CDMA2000 is in the long run as dead as betamax.
If long run is 10yrs, I'll grant you that. But in the US and much of Asia (Australia maybe) where there's CDMA carriers, CDMA2000 1x-EVDx is going to be around for a while.
Actually WCDMA also inherits much of it's tech from CDMA/IS-95 and I have seen some documentation that shows that WCDMA can be compatible with CDMA2000 just like UTMS/WCDMA is compatible with GSM. But it sounds as if the upgrade path for GSM/GPRS/EDGE to WCDMA is easier than going from CDMA2000 1x to WCDMA.
But since for the next several years CDMA2000 1x-EVDO will be better than the GSM related technologies. And by the time WCDMA takes over, the iPhone will be as antiquated as the Newton.
Apple needs to create both versions as CDMA has about 5x% of the US market... and Apple has and probably will continue to cater to the US market first.
Hence all networks that has GSM will transfer to UMTS since this decrases their initial investment as they transfer from 2/2.5G to 3G. Changing network standad is expensive, but the GSM/EDGE marketshare has been growing in US and will most likely continue to grow. At the same time CDMA is non-existant in europe.
The conclusion is simple - CDMA2000 is in the long run as dead as betamax.
If long run is 10yrs, I'll grant you that. But in the US and much of Asia (Australia maybe) where there's CDMA carriers, CDMA2000 1x-EVDx is going to be around for a while.
Actually WCDMA also inherits much of it's tech from CDMA/IS-95 and I have seen some documentation that shows that WCDMA can be compatible with CDMA2000 just like UTMS/WCDMA is compatible with GSM. But it sounds as if the upgrade path for GSM/GPRS/EDGE to WCDMA is easier than going from CDMA2000 1x to WCDMA.
But since for the next several years CDMA2000 1x-EVDO will be better than the GSM related technologies. And by the time WCDMA takes over, the iPhone will be as antiquated as the Newton.
Apple needs to create both versions as CDMA has about 5x% of the US market... and Apple has and probably will continue to cater to the US market first.