Maxamize efficency

I was reading once Tuvan throat singing that it was developed by nomadic herdmans galloping alone on the vast steppes of Tuva. The isolation it was implied in a way inspired this unusual form of singing. I was wondering what other patterns of behavior might develop amongest individuals alone for a long time. Would you start to talk to yourself? Or end up having whole conversations? Create a vast paralell world with its own chracters. Like someone living by themselves for a long time. Perhaps the isolation could also be honed, someone alone with their own thoughts could write stories create intricate tapestries and worlds. Whatever else might be true and I know this from myself, it certainly creates in individual somewhat uncomfortable in large groups. A burden and a curse.