How would anyone know when I'm home? My security system triggers when any body part crosses the plane of any sensor. Make perfect sense.
mic drop.
Everybody knows the rule, fairness is achieved by agreement of that convention.
It is certainly possible to change the rule, but then equally possible that reaching out with hands, diving, sliding or whatever would occur if its first body part. Heck long fingernails would make a difference in the women's 100. Meanwhile, the photo finish tech did make it pretty easy to see which torso crossed the line first, so this is a viable working system without a pressing problem and the possible resultant new problems may out-weigh the benefit.
I thought it was kind of cool, yet random where everyone's feet were at the end and was glad they weren't focused on that. Also given the foot seems to cross before the torso another new problem would be historical records. Yet it'd be interesting if they tried this out at different meets to see how it goes.
