CPAs of the world, take note of a whole new potential client base: According to Bill Gates, if a robot is going to do a human's job, it should also pay a person's income taxes.

"If a human worker does $50,000 of work in a factory, that income is taxed," says Gates in a recent interview with Quartz editor-in-chief Kevin Delaney. "If a robot comes in to do the same thing, you'd think we'd tax the robot at a similar level."

Gates is actually optimistic about the prospect of a workforce made up significantly of robots and, in the interview, he emphasizes the jobs humans will still, and always, be needed to do.

"What the world wants is to take this opportunity to make all the goods and services we have today and free up labor – let us do a better job of reaching out to the elderly, having smaller class side, helping kids with special needs," says Gates.

"All of those are things where human empathy and understanding are still very unique, and we still deal with an immense shortage of people to help out there."