So now USATF says that spira shoes with their springs can't be used but luckily the governing body (most recently) is allowing someone with carbon fiber springs to run, I guess if you spends thousands instead of a hundred or less on your springs then they are allowed, or is it a pity thing?
Not to be insensitive to the issue but if I cut off my legs and just added whatever to my body to win, would it be ok, or would I have to spend at least 30k on it? Small metal springs are a no but large carbon fiber "space-age" springs are....hmm....different governing bodies, but still...