Computers Can’t Be Random… So How Do They Do This?

Computers are built for perfect logic and predictability. So how can they possibly create randomness? In this video, we break down one of the most fascinating paradoxes in computer science: how deterministic machines simulate chaos. You’ll learn: Why true randomness is difficult for computers What pseudo-randomness really means How Math.random() works in JavaScript How to simulate a six-sided die step-by-step How coin flips, magic 8-balls, and game mechanics rely on simulated chance Why abstraction is one of the most powerful ideas in programming We take a simple random decimal between 0 and 1 and transform it into something incredibly useful — a perfect simulation of a die roll — using scaling, flooring, and shifting. Then we zoom out to explore the bigger idea: abstraction. Because inside every simple command lies hidden complexity. From shuffled playlists to video games, much of what feels spontaneous in your digital life is actually beautifully structured logic in disguise. And that raises a deeper question: If randomness is simulated… what else is?