Pacifists become militants. Freedom fighters become tyrants. Blessings become curses. Help becomes hindrance. More becomes less.

But if it's tolerable mediocrity, and you're like, 'Well, you know it could be worse. At least I'm getting paid.' Then you wind up in a job that is slowly killing your soul and you're allowing that to happen. Comfort can be a very, very dangerous thing.

When you elevate the heels more so than you elevate the sole of the foot, you trigger a cascade of compensations in the knees and hips that cause tight hip flexors, and then those hip flexors cause lower-back pain.

At its core, I don't view Facebook as a social network. I think it could become the driver's license of the Internet. And beyond that, it can become the pipes and the plumbing upon what most of the Internet is built. I think it's very well positioned.

If it's important to you and you want to do it 'eventually', just do it and correct course along the way.

World barista champions use the AeroPress to make coffee on the folding tray tables of airplanes.

The downstream effects are unknown. Do your best and hope for the best. If you're improving the world-however you define that-consider your job well done.