They are in their right mind.
^^^^this^^^^
and yes, absolutely. but they have to be left SIGHTED, as well as left HANDED. this is pure dominance.
and if, they have the rare ability to be analytical, as well as creative - well, then they go both ways. (ambidextrous)
Sigel is right-handed.
About 10% of the population is left-handed, and in my experience it seems that more than 10% of the accomplished pool players are lefties. (I'm a righty.)
Apparently it's common for competitive athletes to have an over-representation of lefties. For example, far more than 10%, and probably the majority of the top baseball sluggers have been lefties, according to this.