You can read the full article at the link above (just click on the article title).
Here's an excerpt:
If you are looking for a symbol of strength and power, just think of Superman, survivor of the destruction of the planet Krypton. In the old days, he was outracing bullets, stopping trains, and jumping over skyscrapers. The more powerful versions of Superman can outrace both light and time; bench-press the planet Earth; and withstand a nuclear explosion without a scratch. His mighty abilities come from two sources: Earth's yellow sun and its lighter gravity (Krypton's gravity was apparently so powerful that human beings would never be able to get out of bed in the morning; it would be like having a mountain on your chest).
In spite of his mighty powers, there are two things that can turn the man of steel into a man of paper towel. The first weakness is Kryptonite, radioactive remnants of his home planet. It can weaken or kill him after prolonged exposure. His second weakness is magic. He might be able to stop bullets, but your standard magic fireball or lightning bolt would probably turn him into charcoal. Or you could transform him into a newt - that would fix him.
If you really want to get an appreciation of the strengths and weaknesses of both Superman and the stereotypical introvert, let's compare them.
Do you agree with this analogy? What do you think? Please share your thoughts.