Mac,
Nothing in your posts goes to prove your position and at best it is just anecdotal evidence of your luck. I gave you the name of an organization with real research statistics on the subject. DSAT would be another. Nothing you have stated is definitive proof of anything except what your faulty premise is based upon.
Further I will call it as I see it and based on your own description a 20 minute dive to 240 feet would require decompression which is outside of the scope of recreational diving. I’m going to guess based on this that you are a troll and your statements are fabrications.
I’ll further suggest to fellow members that they follow Curtis’ lead and not respond to you any further. I have left up your last post as it serves to prove our point but in the future I will continue to delete unsupported opinions you present that may be a danger to new divers who can not separate your faulty opinions from the completely substantiated normal practices which have been developed for our safely.