Yale Economist Robert Shiller contends that just maybe robots should be taxed if they end up taking away jobs from hard-working Americans.

Shiller argued that there has been a flood of innovations that make life easier for people, yet eliminate the human element, such as Google Home, Amazon Echo Dot (Alexa), driverless taxi services, and Doordash, which uses Starship Technologies miniature self-driving vehicles to replace restaurant delivery people.

“If these and other labor-displacing innovations succeed, surely calls to tax them will grow more frequent, owing to the human problems that arise when people lose their jobs – often jobs with which they closely identify, and for which they may have spent years preparing,” he wrote in his syndicated blog.

“Optimists point out that there have always been new jobs for people replaced by technology; but, as the robot revolution accelerates, doubts about how well this will work out continue to grow,” the