Podiatric surgeon Dr. Jacqueline Sutera explains why flip-flops aren't sensible footwear, and outlines some of the long-term consequences of overwearing them. Following is a transcript of the video.

Fishkin agrees, saying, “The cheap flip flops are all flat and have no additional structure, so your foot is capable of doing whatever it wants in the footwear, creates more stress on the feet ...

Consider the circuit shown above. The output should be the vote of the three flip flops. The switch to the right lets you inject a failure by selecting the invert output on that one stage ...