Einstein said if you can’t explain it to a six year old, you don’t understand it yourself. And that sums up every person who’s ever talked about any kind of dimensions, string theory, and so on. They talk with contradictions and have explanations
The principle that underlies the working of a roller coaster is simple. As you ascent to the top, your potential energy builds up.e the higher you go, longer the distance that the force of gravity can.