Microsoft word automatically asks to put a comma in after the word which. Which if used wrong (like in a compound sentence) where you have a main clause and a subordinate clause, makes the sub clause refer back to the predicate.
This happened recently in a letter from my childs principal (of all people) who was sending out a permission form. The misplaced comma in essense made the letter about asking for legal permission to teach my kid how to use drugs, narcotics and intoxicating inhalants instead of preventing them from the use of the afore mentioned. He didn't get it. Commas are powerful things.
When I mentioned it to him and the cop running the program, they insisted that I was wrong (mostly because no one else had ever pointed that out) and when I explained the grammar behind it insisted that that was not their intention. I, of course, pointed out that might be a hard case to make in a town where there was a marijuana shop operating in daylight right in the downtown area that the cops were tolerating.
they just don't have a sense of humour. (see its not just on here that I'm a pain in the ass

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