> The major reason for the never-ending disagreements on the nature of consciousness is that pretty much 100% of the time no-one ever rigorously defines what (things) they are actually talking about, and the word is so overloaded and poorly defined that any discussion therefore devolves into people talking about different things, as well as the discussion being so vague as to be meaningless.

You're right, but that rigorous definition is a significant part of the problem. We have a very difficult time rigorously defining and then debating certain attributes about consciousness or related concepts precisely because the definition and exploration of the definition is what is being debated.

This makes it a very fascinating topic.

For my own pet theory I think consciousness as we like to understand it is an emergent and evolutionary social construct for cooperation amongst humans, and different people may have different levels of conscious thoughts, similar to how mammals are conscious in a different way amongst other species. It's a spectrum. There are, in fact, philosophical zombies.