Hi, today I would like to share with you all great presentation by Dan Ariely. You may be surprised how wrong is our perception. In psychology there is subject I do not know a correct name. But, when you decide what book to buy, you cannot make decision correctly because you do not know what is inside, so you answer in mind different question. Is the book face nice? Is the first chapter nice? etc. So you replace question that you cannot find the answer you replace it by expectations. But is it impossible to get answer for question how much money CEOs earn around the world. So you answer a lot :). I do not know how this replace of question should has name, but I know that there is such thing. So, important is to find an answer to correct questions in my opinion. Enjoy this great TED presentation.