It was originally a way of keeping troops correctly spaced as they advanced towards enemy lines. It became obsolete (deadly) with the introduction of accurate firearms.why do Communist and Facist armies march in such an odd way? It’s completely impractical as a method of walking.
Psychology is how minds work either in individuals or groups, whereas Psychiatry is about mental disorders. A Psychologist is there to help people deal with relationships or their environment better either as an individual or a group.
I've often wondered that: how do agents phrase such things to their client: "I've got a great role for you: An ugly middle aged creepy guy who utterly fails to marry the heroine. The director has your picture and he thinks you'll be perfect..."When actors/actresses are asked to audition for unattractive characters, e.g. Mr Collins in P&P, do they get upset?