CPUs are fun and complicated! Check out new tech in Instruments to peek into CPU perf issues in your code.
https://www.youtube.com/watch?v=li0TMRDzyU8

Driving a car is a responsibility more serious than riding a bike or walking, but it is taken as a right, less of a privilege. It’s a dangerous thing to do even when you are careful. This is just one reason I believe in the power of trains. Fewer individuals in control, fewer opportunities for something wrong happening, fewer accidents and deaths.

While I'm linking random stuff, found "Jet Lag: The Game" 2 weeks ago and been having a lot of fun with it. Season 3 is a good place to start (they took a bit to find their footing) https://www.youtube.com/watch?v=q2tJqO6nCSc