You can’t develop muscle memory when your target movement isn’t the same.

Using a mouse is natural as in intuitive. You don’t need to really tech someone to use a mouse. It’s easy in that way.

But that’s not the same as muscle memory. Using my hands is very natural, but when learning guitar, I still need to be conscious of what position my hand is going to be in. After a while, since my hand is constantly going to the exact same position, I develop muscle memory and no longer need to be conscious of where my hand is going.

I feel like I shouldn’t need to explain muscle memory with analogy.