"I have the solution, but it only works in the case of a spherical cow in a vacuum." - *[old physics proverb](https://en.wikipedia.org/wiki/Spherical_cow)*Whenever I am designing something, be it an API or a user interface, I try to remember that I am not designing this for a perfectly rational agent. Instead, I am designing software for a bunch of highly emotional, irrational creatures called *human beings*, all of whom have enormously different tastes.
