Comment by cb321

Statisticians think it can be gotten down to 9.51 seconds ( https://www.sciencedaily.com/releases/2009/08/090806080343.h... ), though, as with most things statistical, knowledge of the underlying sampling process (biology/physiology & physics in this case) may shed more light. { Similarly, knowledge (& tweaking!) of OS schedulers may be able to reduce measurement noise more than pure statistics in a project to time software like https://github.com/c-blake/bu/blob/main/doc/tim.md .}