1. How much of the math is memorized versus just knowing where to look for answers?

2. Hypothetical: you have no access to paid tools for things like FEM and CFD, how do you accomplish your hobby project?

3. Solar panel challenge: What would you produce as a physical, marketable product of value as passive income based upon a mostly self contained system powered by a single solar panel? You may add precursors, but may not interact further until the cycle is complete. There is no other temporal constraint.

This is all just so you can kill-a-what? isn’t it?