
https://towardsdatascience.com/how-to-learn-causal-inference-on-your-own-for-free-98503abc0a06

https://www.sciencedirect.com/science/article/abs/pii/S0264837722005579

https://www.quantamagazine.org/why-mathematicians-re-prove-what-they-already-know-20230426/