I submit for your review the following "conversation":
Person1(P1) - I'm going to go over there early to make sure the system connects to their network. I can't remember if I've ever connected to it before.
Person2(P2) - I'm pretty sure you did.
P1 - OK, well I'm still going to go over early because I can't remember for sure.
P2 - Weeelll, I'm pretty sure you did.
P1 - Well, I don't remember and I want to be sure.
P2 - Well I'm just telling you I think you did.
P1 - That's fine, you already said that. I get it. But this is for work so I'm just telling you I want to be sure.
P2 - Well, I'm pretty sure you did.
Would you consider this an argument?