4 ms·
Empirically, yes. You seem to be equating flatness with surface hardness. Tarmac isn't unforgiving to walk on because it's flat, it's because it has no give.
by watutalkinbout 3mo ago
Empirically, yes.
You seem to be equating flatness with surface hardness. Tarmac isn't unforgiving to walk on because it's flat, it's because it has no give.