Without apologies, I will borrow Simplicio, a character from Galileo’s work for a while, in order to have a small dialogue.
Simplicio– So what is this thing called physics all about?
D.B.– Physics is the study of nature. We try to unravel the mysteries of nature, and with that underestanding we can make predictions about the future.
Simplicio– You mean you look at the sky, you make guesses and look into a crystal ball?
D.B.– That is Astrology. That is not considered a science.
Simplicio– Soooo, you can predict the future? Hmmm? Go ahead make a physics prediction for what will happen tomorrow.
Shores of the Dirac Sea 