What value is a hypothesis? 
Why are tentative
explanations useful in scientific work or in problem solving?
Hypotheses are useful in guiding exploration of new phenomena,
and they're very useful in problem solving.
People who have a talent for fixing things are adept at making
and testing hypotheses.
For example, suppose your computer's printer stops working.
To fix it yourself, you must propose and test a series of hypotheses.
If the power indicator is lit, you can reject the hypothesis
that the outlet is bad.
If the online indicator LED is lit, you can reject the hypothesis
that the computer is offline.
If there is paper in the printer and the paper path is clear
and unjammed, you can reject the hypothesis that there is something
wrong with the paper supply.
Continue to propose hypotheses until you arrive at a hypothesis
you can't reject.
While you are not guaranteed of an eventual solution, this approach
allows you to attack the problem in a methodical, thorough manner.
Send us an example where you
have used a hypothesis to solve a problem