RUL3 - Invert, always invert
2-1b2b1 ‘Inversion’ - Avoid stupid obvious bullshit you’d regret in the future
5-2b1a2 When you invert, you are inverting the problem-situation itself (’why do I have this problem’)
7-2a Be opportunistic and flexible globally rather than inverting locally and prematurely optimized
3-1b0a You can think forward and invert insofar as you have a problem to solve