Jack,
In your book “Anyone Can Ride a Unicycle” (which I do not own) did you really
write the sentence, “Women seem to enjoy a distinct biological advantage when
it comes to unicycling, as they are free from any supererogatory
excrescencies”?
I will not dispute the intent of this sentence, but are our excrescences (sic?)
really that supererogatory? 
Just wondering,
Raphael Lasar
Matawan, NJ