@Concerned_Commy Most uses of the Oxford comma are just plain grammatically incorrect. A comma has two uses, a connecting use where it functions semantically to mean something similar to lexical connectives like "and", or a syntactical use where it functions like a parenthesis---more like a parenthetical dash, since the matching parenthesis can be omitted if at the beginning or end of the sentence. The Oxford comma typically reads as "and and"; only in the disambiguating case, where the intent is unequivocally parenthetical, is it correct.