As for building something users love, here are some general tips. Start by making something clean and simple that you would want to use yourself. Get… - Paul Graham

The customer is always right, but different customers are right about different things; the least sophisticated users show you what you need to simplify and clarify, and the most sophisticated tell you what features you need to add.

Likewise, in any social hierarchy, people unsure of their own position will try to emphasize it by maltreating those they think rank below. I’ve read that this is why poor whites in the United States are the group most hostile to blacks.

Addiction is where you go from something taking you from normal to good to it taking you from bad to normal.

I’d like to propose an alternative idea: that in a modern society, increasing variation in income is a sign of health. Technology seems to increase the variation in productivity at faster than linear rates. If we don’t see corresponding variation in income, there are three possible explanations: (a) that technical innovation has stopped, (b) that the people who would create the most wealth aren’t doing it, or (c) that they aren’t getting paid for it.