A rainbow is the product of physics working for your appreciation of beauty.

You can do yoga all day, you can run or bike or swim, but a pull-up will still be hard. It's not that you have to be a juiced-up 'lunk' to do one; it's a matter of physics.

If a process or adaptation seems too smart for nature, that's a failure of your imagination, not the hand of God. I can make that claim because we have a working model of life's morphing and molding without it.

Cancer is real-time evolution, and your body is the selective pressure.

The achievement is appreciation. Your ability to be surprised and awed by beauty!

When everything else physical and mental seems to diminish, the appreciation of beauty is on the increase.