Dictionaries usually have in their introduction some sort of disclaimer to the effect that a dictionary is descriptive not prescriptive. Similarly with guides to grammar.

In various businesses that I have been employed, house styles are used. These are rules within the company to give consistency to publications and communications. Outside such situations there are no rules (in English): there are conventions within social groups which tend to act as markers for mutual recognition.

But we all have pet hates. I don't mind ending a sentence with any word that makes sense, and I don't care about somebody's idea of what a split infinitive is or should be.

WHY do people pronounce dissect to rhyme with bisect, and cervical with a long 'i'. And when did the French pronunciation for 'envelope' and the 'qu' sound become acceptable?

Stu