When the number zero starts exhibiting its
mean or ugly
side, by being a “numerical troublemaker” to other
numbers in an arithmetic operation.
Zero can really be a “numerical
asshole” if it’s allowed to behave in a zeroist manner
vis-à-
vis fellow numerals, when they’re part of a mathematical operation like 1 ÷ 0, 0 ÷ 0, or 0⁰.