... and on the gripping hand...

(For those not getting the reference, it's to Larry Niven and Jerry Pournelle's SF novel The GrippingeHand and their Moties race, who did in fact have a third hand, "the gripping hand"; the phrase entered human culture as a way to talk about non-binary decisions.)

People who control complex machinery often talk about how it can come to feel like an extension of their body, this was like a natural extension of that.