Always keep your mind open when you are experimenting. While working toward one goal, one of your mistakes may prove to be very useful for another purpose. Or you may turn a side effect or byproduct into something that will become a hit! Alexander Fleming thought his experiment was ruined when mold formed in the petri dish, but he wound up finding penicillin that way! Percy Spencer was working with a “magnetron” when a candy bar melted in his pocket, and that’s how the microwave oven was born. Those are only two of the 10 Accidental Product Discoveries. Link -via the Presurfer
...Well I guess it's no kids for this guy ;-)