3 of my sons are mathematicians whose dinner discussion is higher math that leaves me blank-faced.
Tonight our eldest son (degrees in Math, Computer Science, Physics and Greek) was explaining tonight at our family dinner (typically 15 - 22) that even math is based on theories and axioms THAT CANNOT BE PROVEN.
So much for the idea that everything can be proven or disproven by math......
Look up the Continuum Hypothesis on Wikipedia where mathematicians are taking opposite sides on it in a big ongoing debate.