overly-anal
Overly_Analytical_Engineer
overly-anal

Interesting, but it begs another question. 30mm/(2.39 mm/s) = 12.55 thousandths of a sec or 1.255 hundredths of a second. So if you beat the competitor by 1/100th of a second can you guarantee you didn’t swim a hundredth of a second shorter course? (not with the 3cm tolerance...)