Musk’s five-step engineering method:

  1. Question the requirements — Should this thing even exist?
  2. Delete — Remove unnecessary complexity
  3. Simplify — Make what remains more pure
  4. Accelerate — Increase efficiency in the right direction
  5. Automate — Scale the correct process

The key is the order. If you optimize before you question, you’re just perfecting the wrong thing.

Musk says: If you’re not adding things back at least 10% of the time, you’re not deleting enough.