Forecast: Sex and Marriage with Robots by 2050

Humans could marry robots within the century. And consummate those vows.

In his thesis, "Intimate Relationships with Artificial Partners," Levy conjectures that robots will become so human-like in appearance, function and personality that many people will fall in love with them, have sex with them and even marry them.

"It may sound a little weird, but it isn't," Levy said. "Love and sex with robots are inevitable."

Levy argues that psychologists have identified roughly a dozen basic reasons why people fall in love, "and almost all of them could apply to human-robot relationships. For instance, one thing that prompts people to fall in love are similarities in personality and knowledge, and all of this is programmable. Another reason people are more likely to fall in love is if they know the other person likes them, and that's programmable too."