Me: For this POC you've given me, I will do an old-fashioned HTTP form submit, no need for anything else.
Architect: But it must have websockets!
Me: Literally nothing in this POC needs XHR, much less websockets. It's a sequential buy flow with nothing else going on.
Architect: But it has to have websockets, I put them on the slide!
(Ok he didn't say the part about putting it on the slide, but it was pretty obvious that's what happened. Ultimately I caved of course and gave him completely unnecessary websockets.)