 This funny notice came up on my Facebook feed last night. It were an apology for conducting this experiment without people's consent. Quite scary actually. Apparently they carry out this psychological experiment and changed stories in people's news feeds so that some people will be ensuring a higher number of positive posts and other people will be ensuring a higher number of negative posts to see if it affected their behaviour. And it worked. I read that people's moods changed depending on what information they read. And the crazy thing is they did this to nearly 690,000 people. That's almost two-thirds of the population of Birmingham. And they did all of this without anybody's permission. And I guess people didn't like it because they had to issue that apology. But it's still mad to think that they could change their behaviour of people. That's a lot of power to have. I just don't know what to think of it. Should Facebook have conducted the mood experiment without asking the permission of those taken part?