In my younger days, ropewalking or even running up 200ft, didn't really seem to have to time to think, it was a case of get to the top as quickly as possible. Indeed one race evening in a Cornish mine a number of us ascended at 60-80ft/min.
However in my latter years, the last time I ascended say only 50-60ft it was a case of thinking have I got the energy to get to the top and how long it might take.
PS never really worried about the ropes etc, as I was always the lightest so everyone else had tightened knots etc ;D
Going down, I always needed extra ballast to assist my descents otherwise the rope wouldn't pass through my rack lol
If it can't be grown it has to be mined.