Mental models are reoccurring concepts and theories that are broadly applicable across disciplines. Using these common ideas you are able to understand a situation quicker, and jump to second-order questions and higher level thinking about the situation1.

Model
Critical MassA certain amount of a thing is needed to achieve a result
Inverse Thinking

Interesting Mental Models and Axioms

Antifragile

Antifragile things benefit from shocks, rather than resilience or robustness, these things thrive in the face of volatility, randomness, and disorder1.

Arguing from First principles

Starting from the bottom up to build larger conclusions. The first principles are self-evident assumptions upon which you build1.

1. Weinberg, G. & McCann, L. Super Thinking: The Big Book of Mental Models. (Portfolio, 2019).