To be fair , none of the existing are particularly impressive either . It ' s a little bit of Yeah we could but the ideas aren ' t that good . <| sep |> Holy crap , way to dismiss archaelogical evidence you don ' t like . <| sep |> I am thinking that all amino acids except for the non polar ones and tryptophan and phenylalanine can participate in H bonding . Is this correct ? <| sep |> Der war unter dem Namen based god unterwegs . <| sep |> You don ' t have to tell me . A kid shall learn to always aks if it doesn ' t understand why it should do something . The learningeffect for the kid is way better with an explanation instead of just telling them to do or don ' t do something . In the end less frustrating for both the teacher and the kid ! What do you think is better ? Don ' t touch the hotplate . OrDon ' t touch the hotplate . Why not ? It will hurt a lot and be very painful .