polytrip, the description of your experience is exactly what I mean. You say you took 8 blotters and werent significantly different than 2... That is a very limited range for finding out about 'saturation point'..
Let me put it this way.. Lets say that the mind doesnt respond 1-1 in terms of dosages and effects, but it has a 'margin of error', so to say, of +/- 5 or something, which depends on all sorts of factors... Then maybe one day you took 8 drops and another you took 2, and exactly because of all these factors interacting with the effects of the substance, you feel they werent significantly different, and others like you feel the same, and then they decide there is a saturation point..
There might be 'steps' of saturation, so to say, where if one significantly increases not from 2 to 8, but from 2 to 15, or 25, or more, then this huge leap might represent a new stage in the psychedelic effects that are significantly different and stronger than with the lower 'stages' of dosages.
Just one example how both our experiences and opinions might make sense.
Thats the thing, there's a lot one could test and experiment in a propper way and increase a practical and important knowledge, but because of illegality its hard to conduct experiments and share knowledge in a trustful way