Comment by jongjong

The notation used in Euler’s totient function reminds me why I chose to study software engineering instead of maths. The same notation can be used to mean 3 different things. Illogical. It baffles me why mathematicians made the language of maths, which is supposed to be the language of logic, so ambiguous. So sloppy to reuse the mod symbol to mean different things and sloppily using an equal sign instead of congruence symbol.

I will henceforth refer to software development as 'software engineering' to convey its equivalence, or perhaps superioriority over other 'engineering' disciplines which are based on ambiguous mathematical language, as opposed to rigorous, machine-verifiable, unambiguous languages.