Thank you for your time on writing this. You mentioned some maths' phrases like discrete logarithm or Taylor Series that are unknown to me. You said, though, that in order to reverse the result of a public key we need the discrete logarithm. A computer calculates only in real numbers, so it cannot reverse it. Here's my question. Can a human do it? Or is it mathematically impossible?

Also, I'm not fully sure why a computer calculates only in real numbers since it can calculate x * G on an elliptic curve shape. For example, how all these incredibly many bounces are calculated on the axis within 1 second?