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"Who was the first guy that took a look at a cow and said " I think I'll drink whatever comes out of those things when I squeeze them? " - Calvin and Hobbes comic

This quote is just great and I also find it funny at the same time for some reason. Its telling you that sometimes people think that trying something new seems weird or incorrect but at times the result is a lot greater than people expected.
Another great example of this is Leonardo DaVinci's type of one man helicopter. Many years back Leonardo sketched a flying machine (years before the Right Brothers had even thought of flight) and everyone believed him to be out of his mind. But as of today an inventor in Japan has used Leonardo's idea to build an actual helicopter based on DaVinci's model.

This just goes to show that anything is possible and can be a good idea even if it doesn't seem like it at the time.

*For more information on Leonardo and his inventions go to http://en.wikipedia.org/wiki/Leonardo_da_Vinci