I am reminded of a bit, possibly apocryphal, that when the first three-fin rocket (instead of four, as had been the case with the V-2 and successors) was propos

I am reminded of a bit, possibly apocryphal, that when the first three-fin rocket (instead of four, as had been the case with the V-2 and successors) was proposed it was questioned whether or not it would be stable, up until someone pointed out that arrows with three fletching feathers had been flying straight for quite some time.