The hiking analogy works pretty well, extended to traveling in general. I spent a couple of years traveling around to visit friends and family all over the US,

The hiking analogy works pretty well, extended to traveling in general. I spent a couple of years traveling around to visit friends and family all over the US, and regularly my estimates were off in when I'd arrive somewhere. My software delivery estimates are similarly not perfect, in the later direction like most people. My conclusion was that my estimation of how long it takes to do anything is off a bit. For me, this is because I'm trying to say I'll do something sooner to meet the perceived needs and desires of others.