Awww, you're no fun Glenn

I think the complexity of pharmaceutical studies where innumerable physiological variants and genetic predispositons come into play with the chemicals is not a good comparison to the toilet flush (where the variables are toilet shape/flow, gravity, water)

I recall a statistical experiment from school in which 10 dimes were tossed 100 times, and the results (how many heads, how many tails) were charted on a graph. Well before the 100 tosses were complete, the bell shaped curve began to form. Subsequent tosses only made the same results into a larger bell.

Sinks are clearly influenced by all sorts of shapes and configurations... but toilets are pretty generic. My toilet drains in a counter clockwise direction when flushed. Every time. Brand is Kohler. (different brands may have different shapes which could influence the flow)

humor me. Which direction does your toilet drain, and what brand is it?

https://www.dropbox.com/sh/ey71h8ep047758h/AAC12jNM0Hz9Q8zsh5iDeqNHa?dl=0