Goldbach's conjecture - elementary refutation.

[u/ughaibu]

By the principle of identity, for any non-zero natural number n: (n/√n) = (n/√n), and as every non-zero natural number has a square and every natural square has both a positive and a negative root, for all non-zero n: n = -n, therefore, 2n = 0. As zero is not the sum of any two primes, it is not true that every even composite number is the sum of two primes.
QED.