- What does it take to really understand physics?
The crucial problem in teaching physics is that most people have a certain understanding of physical principles before they ever approach the subject in a classroom or book. The reason this is a problem rather than a benefit is that the average person’s understanding of physics is wrong.
To be more specific, there are two kinds of “understanding” one can have about physics. The first is the one that babies slowly gain as they teeter precariously on their pudgy little legs and try to manipulate solid objects with their hands and, occasionally, mouths. This is baby science in action: after a few hundreds trials, even an infant’s brain knows that if you push an object to the right, it will generally move in that direction.
By the time we’ve grown up, this understanding has solidified into that intuitive, unconscious awareness of the relationship between cause and effect which allows us to catch baseballs, flip pancakes, or juggle chainsaws.