In his essay, “Medusa and the Snail”, biologist Lewis Thomas claims that humans are built to make mistakes. He then argues that that mistakes are the basis for human growth. There are always right and wrong choices of which one needs and equal balance. Wrong choices are necessary and one learns from them. Thomas argues that mistakes are common and that they serve as an important guide towards discovering the new and creating progress. Every argument Thomas gives, there is always a counterargument. Thomas claims that in debates there is a mutual understanding that one is right and the other is wrong. I agree with Thomas that error is the basis for progress because faced with errors, as human, we are to correct our wrong. I found his contention