Yours is a question that you can see the answer or you can’t. Some people’s brains are geared differently and they can see things. Take Albert Einstein, he figured out the theory of relativity in his head! And with all the computers we have now, we still can disprove it. How did they figure out the speed of light so he could figure out his equations? How does AM radio work? Is it the same as FM radio? (No).
Did they know that sound doesn’t travel in space before we sent astronauts?
Stay curious!