Regardless of strychnine, LSD remains very volatile. I wouldn't term it "uncertainty", I would term it "near total lack of certainty" given small sample size an

Regardless of strychnine, LSD remains very volatile. I wouldn't term it "uncertainty", I would term it "near total lack of certainty" given small sample size and lack of (any) proper verification that the drug was even active anymore. At the very least, he could have taken a dose to serve as this purpose after the experiment (so it would not interfere, and would provide a "later" bound)—it's fairly easy, given certain high contrast imagery, to create certain visual effects that a placebo (or degenerated drug) could not.