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I actually have read it, no where does it talk about O2 windows, have you read it? They used air for decompression, not Oxygen. The study was more to do about deep stops than anything. So I ask for the third time, which elements of RD are "based on debunked thinking and outdated paradigms?"...

So you're claiming that the NEDU study disproves the efficacy of the O2 window? I'm still unclear exactly what you're claiming. You seem to be hiding behind general big hand-waving ideas without being specific as to how they disprove anything. Again, could you please elaborate?

Which elements? Where are they debunked? Care to elaborate rather than just give your opinion? Have you taken the class? Have you dove it? I disagree, I think a computer can get you into just as much trouble following it blindly without thinking than RD can if people do it incorrectly...

Careful, I think he was very specific and mentioned that he uses 50/80 but that he can't recommend it scientifically.

Cool thanks, I'm going to try and get my hands on it.

Which way? Generally RD tries to spend as much time at 1.6 PPO2 for the whole "oxygen window" thing while limiting on-gassing of the fast tissues, that's the goal anyway as I understand it. Can you provide a link? If there is none, what journal is it published in?

The actual reason has something to do with an increase in carotenoids (sp?) in the divers following profiles with the old RD. I believe the results of the Italian study are still not published due to an embargo as Dr. Simon Mitchell mentioned in another thread.

Those numbers may very well be correct for those depths, I mentioned a Tech-1 profile only. Those stop times are beyond my limits. In general there is discretion in how you shape your deco and how much total deco you do, it really depends on the situation.

One of the other changes in RD 2.0 is not only the 66% deep stop from 75%, but the way the S-curve is shaped. Example with old RD using a 50% bottle and 30 min of total deco: 70': 5min 60': 5min 50': 2min 40': 2min 30': 3 min 20': 12 min 10': 3 min Example with RD 2.0 using a 50% bottle and 30...

Either you're not reading my responses or not remembering them: You see I did answer, it's just not the answer you're looking for. I did answer your question, you either didn't read it or didn't like it. So you're putting words in my mouth, cool. You're not reading my response or not...

Precisely, only they aren't silent about using the same exact profile as one does at sea level. Might as well call the local chamber and tell them you'll be there around noon.

Really? Have you been reading?: Yes, and you still have not told me whether my "guesswork" is acceptable. I'm also "guessing" that by now if you haven't objected it is. So it seems my method of depth adjusting RD for the purposes of determining total deco obligations works close...

I wasn't attacking him, I thought he was mis-representing how he left UTD. I confused him with someone else, and for that I'm sorry. It was never meant as a personal attack. UTD does not teach altitude diving in any class that I know of. It's not hard to answer, I've answered it 6 times now...

Jay you didn't adjust that at all from sea level? Seems like a bad idea.

In comparison to the "know-nothings" I'd say I definitely understand more than them. However, I'm far from an expert on ratio deco, my training limits I've described should give you an indication of that. I'm curious why you can't pick a dive that's within the limits of my training to discuss...

You're really confusing me. You mentioned: What dive are you talking about that doesn't ever exceed 160' that you planned? Did you share it? You're not comparing apples to apples. You changed the BT to 15 min and the depth to 200' at 0 ft elevation. Also I think there's a difference in...

Depth is not deco time to you because you're not using RD. If you're using RD, then depth and time spent at it is closely related to your deco time. Perhaps it's possible for you to get 30 min or less of deco time and do a dive to 160' with VPM-B or Buhlmann GFs, I hope you don't wind up as...

I wouldn't do the dive at 160' for 25 min at 6000 ft of elevation because the deco time would be way more than 30 min. I've also stated I think for the third time or fourth time now, that UTD doesn't teach altitude diving in ratio deco. To be clear (again), I'm posting what I would do...

Sure, if you pick a shorter bottom time you end up with less deco time. However, the limits are no more than 30 min of deco, no more than 15 min on 100% O2, and no average depth greater than 160' (at sea level). Because 160' at 6000 is definitely not 160' at sea level, the dive is outside the...

Yes. The increased deco obligation from a dive to 160' at 6000 ft of elevation is outside the limits of my training (max 30 min deco). If I used a computer with VPM-B or Buhlmann GFs I'd end up with more than 30 min of deco too. The limitation is not ratio deco, but deco time. Ratio deco...