nobody is jumping on you...  at least not me, just having an interesting argument.. 

I agree that tolerance plays a part in some cases... but all cases? I dont know...   Same with the saturation thing.. Is it true for all people ? dont know.. would be interesting to test it out with a good research design.

and yes I also agree, and I doubt anybody wouldnt agree, that one should take care and not jump into taking a sheet of acid  (or even 10 hits) without being sure he can handle it by having done at least near-enough dosages with no tolerance before. and as mentioned, taking even more care with set and setting if this person decides to do it.