Whenever I see a tree that is climbable, it must be climbed. Sometimes when I'm on a run, I'll just run up a tree, jump on a branch and swing off. My favorite tree, in Saratoga, gets me a good 75 feet up.

While the developed world has shifted from agriculture to manufacturing and then to services, the number of jobs has always climbed.

I have a journal of everything I've ever climbed since 2005. For the entry about free soloing Half Dome, I put a frowny face and added some little notes about what I should have done better, and then underlined it. Turns out that is one of my biggest climbing achievements.

I've done routes where I've climbed 200 feet off the ground and just been, like, 'What am I doing?' I then just climbed back down and went home. Discretion is the better part of valor. Some days are just not your day. That's the big thing with free soloing: when to call it.

It is wrong when we, in effect, throw safe and sound financial institutions into the same category with banks and lenders that climbed too far out on a limb with no way to return.