I had occasion to use the word, “all”, in a sentence. The prompt, of course, was singular third-person, “is”, as in, “all is”. Trouble being, “all” can’t be, “is”. It might with argument be, “are”, explicitly or implicitly, the latter of which I chose in the sentence in order to get the job done.
“All” can’t be “is” because “all” can’t be tidied up into singular with boundary.
Do you ken?