[sixo]

Would you explain the joke for the rest of us?

[MalbertKerman]

It's quietly reversing the traditional "We approximate the cow to be a sphere" and showing how the spherical math can, in fact, be generalized to solutions on the cow.

[sixo]

oh. I did not interpret that blob as a cow. Thanks.

[kazinator]

In the Geometry Processing paragraph (second last, above Further Reading), there are clearly cow shapes: four legs, head with ears and horns.

[xeonmc]

Spherical Haromics approximating Spherical Cows?

[dark__paladin]

assume spherical cow