Metropolis–Hastings algorithm

And there are techniques, especially in the context of the Markov chain Monte Carlo simulation, which are designed to simulate complex distributions actually defined on this combinatorial space.

One of them is called Metropolis Hastings, and this is really designed to actually focus on what matters.

So just to give you an example, even if you have billions of alternatives, Most of them are irrelevant because they are completely off.

They will never be attractive.