So what does knowing your power over a measured time or distance actually do for you?
I'll try to let you know next year!
My cousin gave me his old powercranks so I will see what the numbers do for me. I have a long-standing target of doing the 8 km Cragg Vale climb in 20 minutes but have so far never got close to it.
There is often an unfavourable cross-headwind for the exposed second half of the climb so it is hard to get a clear indication of progress by comparing times - most favourable to least favourable wind conditions have made > 15 minutes difference in the past!
I think that if I knew I could average (say) 200 Watts, I could probably push myself to do 205 W. If I did that often enough, then maybe I would raise my target to 210 W, and so on until it was obvious that I had got close to what is left of any original genetic potential.
It will be interesting to see how I get on.