"Critical thinking is not something you do once with an issue and then drop it. It requires that we u..." — Daniel Levitin

I have never seen a proton or electron spinning around it. I have never actually seen a chromosome. I trust that they exist because people who I trust tell me they do.

The obvious rule of efficiency is you don't want to spend more time organizing than it's worth.

Approximating involves making a series of educated guesses systematically by partitioning the problem into manageable chunks, identifying assumptions, and then using your general knowledge of the world to fill in the blanks.

Our to-do lists are so full that we can't hope to complete every item on them. So what do we do? We multitask, juggling several things at once, trying to keep up by keeping busy.