According to the standard model billions of years ago some little quantum fluctuation, perhaps a slightly lower density of matter, maybe right where we're sitting right now, caused our galaxy to start collapsing around here.

We couldn't build quantum computers unless the universe were quantum and computing. We can build such machines because the universe is storing and processing information in the quantum realm. When we build quantum computers, we're hijacking that underlying computation in order to make it do things we want: little and/or/not calculations. We're hacking into the universe.

Thinking of the universe as a computer is controversial.

If you take a more Darwinian point of view the dynamics of the universe are such that as the universe evolved in time, complex systems arose out of the natural dynamics of the universe.

If you wanted to build the most powerful computer you could, you can't do better than including everything in the universe that's potentially available.

The history of the universe is, in effect, a huge and ongoing quantum computation. The universe is a quantum computer.

Another feature that everybody notices about the universe is that it's complex.