> Toilets, along with a few other plumbing fixtures, have a "UI" that has not changed much for over a century. The human bottom hasn't changed since time immem

> Toilets, along with a few other plumbing fixtures, have a "UI" that has not changed much for over a century. The human bottom hasn't changed since time immemorial. Plus, every human has similarly shaped buttocks. Computers interact with the mind, this means they are subjective, it's a moving target.