The process of becoming an expert in something is about absorbing lots of experience into your mind's System 1.

System 1: cheap and fast but very specific matching.

System 2: expensive and slow but general.

When you have the relevant experience in your System 1 associative memory, your System 2 doesn't have to be engaged as often.

Your System 2 is great at using reductionist tools; that means it's terrible at understanding complex phenomena.

You have to "burn in" all of the possible situations as experiential memories, to be available for the System 1 to later draw on.

If there's something unlike what you've done before, you have to engage your System 2, and it will be hard and error prone.

Practice is like taking in all of the angles and remembering them so you'll be able to recognize them automatically later.