in reply to regexp operator -- same mistake over and over again

I'm quite surprised that other monks didn't mention this, which comes quite naturally to me. We read and write from left to right, mathematically we think of 123456... an increase from left to right. It is simply more natural to us to see things increase from left to right and ~= is an increase from the thinner tilde to the thicker equal sign. A decrease seems unnatural.

Also, on the keyboard the tilde is on the left.