I remember years ago watching Mosconi play straight pool, 'Sweaters' would say, "I can make those shots, He's shooting all easy shots."
When non/amateur players state, "That's the shot I would shoot" or predict what a Top player will play has the Same resemblance to Mosconi running balls.
The key is, "The pro players whether it be Pool/3 cushion/Snooker are making it look easy because they know how to play position/correct patterns in pool to generally have simplified shots to continue runs!"
Seeing it is one thing and important! But the doing is the whole enchilada.