We had a maths teacher who ' d send miscreants for a walk rather than give out to them . Most days you ' d see some lad from our class wandering up to the top of the rugby pitches before coming back down again . Often to be told to do another circuit . Not many stuck it to the end of Honours Maths . <| sep |> My space had a friend rating system where you say like this is friend 123 etc . Made friendship more competitive and weird if you cared about it . I can ' t remember what it goes up to that you can choose , probably 8 since that ' s what this dude goes up to . <| sep |> I read about a tribe in Africa that sees a heap more shades of green than others do . Their evolutionary trait so they could see animals hiding in the grass better .