I
imamartian
If I do several jumps on the spot my height will start to diminish, however if I do several jumps on the trampoline my height will increase.
Mechanical aids greatly improve performance.
Not in this case. That's what the extensive testing was all about
the guy hasn't got any lower legs... how can he run quicker that me?
You've spotted the only performance advantage given by the blades - they allow him to run as effectively as someone with legs.
If he had lower legs he'd still run a lot faster than you. He's a highly trained and superfit athlete.
Unless there's something you're not telling us Usain...
he hasn't got lower legs, and he aint gonna grow any, so it is statistically more likely that i could train to run faster than Usain Bolt.
And you argument wanders into "if he had...." there are no measures or tests for 'if' in science...