I think there needs to be some sort of human ethics oversight for running psychologically harmful research experiments under the guise of A/B testing. When did

I think there needs to be some sort of human ethics oversight for running psychologically harmful research experiments under the guise of A/B testing. When did the practice of 'informed consent' on human test subjects become optional? The infamous Facebook user emotion study comes to mind: https://www.forbes.com/sites/kashmirhill/2014/06/28/facebook-manipulated-689003-users-emotions-for-science/ https://www.forbes.com/sites/kashmirhill/2014/06/28/facebook... Anyone know why tech companies aren't held to the same ethical standards as academia?