You've called random() a thousand times. You've never questioned it. That's the problem.

Turns out, most of what developers reach for when they need "random" is about as random as a Tuesday - deterministic, predictable, and in the wrong context, exploitable. We'll look at exactly how predictable, with live demos that will make you slightly paranoid about code you shipped last year.

But this isn't just a security horror show. We'll also flip the question: when is determinism exactly what you want? Reproducible tests, seeded simulations, debugging randomised systems - the part of the story that usually gets skipped.

And then - because why stop at boring - we'll follow the question of what randomness actually is all the way down the rabbit hole. Spoiler: it ends somewhere genuinely weird, and the universe is involved.

Practical takeaways, live demos, one existential crisis about the nature of reality. The usual.