Aprediction that comes true because people believe it is called ageism a self-fulfilling prophecy elderspeak a universal design

A self-fulfilling prophesy is a prediction which is made true by the fact that people believe it. One mechanism which can explain self-fulfilling prophesies is that the belief that something will happen causes people to adapt their behavior in such a way that the result is likely to come about. For example, a person who believes himself or herself destined for failure is, because of this pessimism, unlikely to cultivate the sorts of habits that might lead to success.

I'm going to go with 1,982 feet because of all of the ice.                                               ps its this is not the answer go with d 6,500.