Randomness, does it exist?

Does true randomness exist?
I mean, a random number generator on the computer uses some algorithm, it's not truely random.

>>3
That's nice, but it doesn't answer the question. Hardware RNGs work by picking up environmental data, which makes the data they produce random enough for most (well, essentially all) purposes, but not necessarily completely random.
If you're looking for true randomness, you'd probably have to look for it in quantum effects.

However, the question is largely academic. RNGs don't even have to be hardware to be considered cryptographically secure, if that's what you're wondering about.