Which part of this conception of experimental ethics does this violate? Facebook's experiment did not directly cause the emotions, the posted content for that. Even if it did, this sort of thing is well within the bounds of normal experimentation with large systems.
This is similar to claiming that traffic experiments which change the flow of cars, in term causing some people to experience more traffic and become unhappy, are unethical. Do you think traffic experiments are unethical?
This is similar to claiming that traffic experiments which change the flow of cars, in term causing some people to experience more traffic and become unhappy, are unethical. Do you think traffic experiments are unethical?