How are people able to solve a Rubix Cube in only a few seconds?

Question

How are people able to solve a Rubix Cube in only a few seconds?

In: 813

Answer 1

You learn the the patterns it takes to solve and move pieces where they need to be.

Learn them until its muscle memory, so that instead of thinking about 8 moves to move a piece you remember it as one thing.

Now all you have to do is remember which pieces you need to move where, instead of each separate turn of every face to move them.

Then, when going for some real speed, you take those patterns that were in muscle memory except now you try to find faster and more efficient ways to do each pattern. Maybe spinning the bottom with your pinky instead of having to turn the whole thing to face you kind of thing.