Differences and similarities between humans and computers?

They are designed to work with humans.
As awesome as its capabilities are, the computer is still a machine. Fittingly, the Encyclopædia Britannica states: “The computer cannot exercise judgment or common sense, and it must be meticulously instructed in the program as to how to handle every contingency.” Yes, the programmer must supply the imagination and reasoning ability as he develops the instructions to direct the processing. The computer, like any other machine, can do no more and no less than follow the designated path laid out for it by the programmer. It can determine (if designed to do so) whether a particular statement is wrong according to the rules of the computer language. But it cannot determine if the statement is logically right or wrong for achieving the desired result.
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