James: Though ofc I dunno for sure
Farfar: I always count that as a given
James: Hahah
James: You probably meant that as an insult
James: But it's a fair thing to do most of the time for everyone
Farfar: Aye, you can't be too sure that the guy next to you are sure about a thing or not. Be sure of that
Farfar: ehh... *scratches head*
James: You can be sure that you can't be sure that other people are sure that they can be sure about things
James: *Nod*
Farfar: Well, if they're not sure about if they are sure, then they'd probably wont say that they're sure about the certain thing at hand, which make them say that they -aren't- sure about the thing to be sure about, and you wont question it at all, since he/she said he/she wasn't sure about it. *Nod*
James: For sure