I recall watching a scene from the movie “Gattaca” about genetically engineered humans blah blah blah yadda yadda Our Hero Struggling Against The Odds And There’s A Hot Chick etc. etc. etc.
Anyway, in one scene, they made some hay about watching a pianist who had been Specially Engineered with six fingers on each hand.
The first thing I thought was how no pianist would bother with an extra finger. A violinist — certainly a violist or cellist — yes. But not a pianist.
An extra arm, though? Okay, I might take that.
Organists might like a few more legs, too.