I’m a bit surprised by the number of comments here basically saying if we can’t logically prove that X feels pain, then it’s fine to do whatever with it, or that if we don’t know exactly where the line should be drawn, then there’s no line to be drawn at all.
Do you all always behave according to well-defined rules within a consistent logical system?
I don’t think you can prove to me that you or your pets feel pain, so what would be the logical consequence of that?