C: Is your arm bleeding?
S: [Looking at arm] Oh...maybe. I think I bumped it on the drill again today. Where?
C: [Pointing to wound] It *is* bleeding.
S: Yeah, I guess so. Isn't that where I cut it the last time I bumped the drill?
C: [Pointing to a nearby scar] No, that's this one.
S: Oh. Well...almost.