Bret Victor - Inventing on Principle

- "Follow your principle"
- injustice, responsibility not only opportunity-> social wrong. It's not just for social activity, but in technology as well. A personal mission. Larry Tesler didn't only invent "ctr+c", or "modes", but he recognize a culture wrong that was invisible in the culture. 

- Fighting for a particular idea. 1. The world try to find you by your skill. 2. Path of the problem solver: certain problem, work it, make contribution. 3. Go after his problem.

It can take time to find your principle. It took me ten years. Experience many things, and see whether it resonates with me. Confine yourself to a single skill, may limit the ability to find the principle.

A principle should be clear, to dictate right from wrong. 

- Creator needs an immediate connection
- So much of creation is discovery, if you can see the immediate connection, you can't create it, trying it immediately
- Creator needs to see what they are doing, been able to try idea as you think about.

- If we are writing program on a computer, why do we need to simulate computer in our head?

- I always think about million of pieces lock in million of heads.