Today's your lucky day, you're one of the 10,000 who learn about quantum mechanics (fundamentally random) and chaos theory (sensitivity to initial conditions such that even classical mechanics might as well be fundamentally random) for the first time today:
Today's your lucky day, you're one of the 10,000 who learn about quantum mechanics (fundamentally random) and chaos theory (sensitivity to initial conditions such that even classical mechanics might as well be fundamentally random) for the first time today:
https://en.wikipedia.org/wiki/Quantum_mechanics
https://en.wikipedia.org/wiki/Chaos_theory
https://xkcd.com/1053/
Edit:
Also, p-values: https://en.wikipedia.org/wiki/P-value