User:M.O.X/Mathematicians are not linguists!

Foreword
The following theory is the work of User:Sonia, said user may or may not have been under the effects of inebriation during the development of the theory written hereafter and neither said user nor User:M.O.X are responsible for the possibly contradictory statements of the theory herein.

The theory
Let "mathematicians" be defined by "group of people who edit wikipedia math articles" and let linguists be defined by "people who have perfect grammar".

Wikipedia articles do not always have perfect grammar. As Wikipedia articles on mathematics are a subset of the whole with equal mapping, they also do not always have perfect grammar.

Since all editors of such articles, by assumption 1, are mathematicians, at least one must have introduced the error. This one is not a linguist, as linguists always have perfect grammar by assumption 2.

∴ the set "mathematicians" cannot be mapped onto the set "linguists" as there are some members of the former that do not belong in the latter. Ergo, mathematicians are not a subset of linguists.