Most parts of the U. S. have been using DST (Daylight Savings Time) for decades. However, not everyone likes it. The time change can create complications. For example, DST can cause sleep deprivation. It confuses the body’s biological clock. Sleep loss can lead to depression and dementia, psychiatrist Emily Deans says. A 2014 study conducted in the United States also found that the risk of heart attack increased by 24 percent the Monday after DST. This was compared to a typical Monday for workers. There are also economic consequences. In 2010, researchers from Chmura Economics and Analytics estimated that the U. S. lost $434 million because of DST. Workers lost sleep and were sluggish. They were less effective at their jobs.

Ascientist successfully predicts the outcome of an experiment. you watch carefully and know he didn't cheat. the scientist's success shows that: a) the scientist knows absolute truth about this experiment; success is not possible unless you know the truthb) the scientist was just lucky; no one ever knows what's going on, so successful predictions require luckc) the scientist may know the truth, or at least know something that is close to the truth, or the scientist may have gotten lucky this time; you can't be absolutely sured) the scientist really was cheating, even though you didn't see the cheating; no one can get things right, except by cheatinge) the scientist spent the night at a particular hotel chain and go a free breakfast, giving the scientist the ability to do amazing things