> A third option is when you are expected to be a voice of authority (ie. you're a tech and someone just asked you what Linux is). Authorities are supposed to k

> A third option is when you are expected to be a voice of authority (ie. you're a tech and someone just asked you what Linux is). Authorities are supposed to know, and people will think you're BSing if you say "I thin In that scenario "I think" is not to do with opinion but uncertainty (it can be used for both). The definition of Linux is an established fact so if you know what it is there is no need for "I think".