The real story is the bunching at round numbers of hour and half-hour marks:
“Although the four-hour mark is particularly dramatic, qualitatively similar differences exist at other hour and half-hour marks and, to a lesser extent, at 10- and 15-minute marks”
devingpope.com/assets/files...
Tan G.
This marathon-time histogram is a classic piece of data storytelling. Men *really* want to finish in under four hours
journals.sagepub.com/doi/10.3233/...
