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AskReddit EI CM 14h What is just a placebo effect but most people don’t realize? 53.2k 17035 comments L hibikikun 4479 8h Loading spinners on web pages. I once had a user complain to me a web app was too slow (and it was pretty fast). So I tested him by making the animation spinner spin much faster. He went to my boss to praise me how much faster the web app was. (spin.js is what i was using)