it just shows what you need to do not how to do it
Not only it's false statement (those vids don't tell you "go from A to B, they show you which path you should take), but it doesn't even make sense in general: if someone tells you to go from A to B using left path, he is telling you what to do (go from A to B) and how to do it (by choosing left path.
It's just a game of trial and error.
You couldn't be more wrong. It's just logical puzzle with admittedly big dexterity factor. Proper path can always be deducted using logical thinking.
