[fluoridation]

It sounds like you're not disagreeing with what the other person was saying then, you're just disagreeing with their application of the word "friction". I don't think it makes much sense to argue about the precise definition of a metaphor.

[TeriyakiBomb]

Didn't see this reply before adding my own. Yes, I think we're in agreement.

[mech998877]

fair enough. I'm probably still in disagreement with the friends I mentioned earlier!