Many things are not zero-sum, for example if I help you and you help me we will both be better off than before. Sites like stackoverflow make programmers more p

Many things are not zero-sum, for example if I help you and you help me we will both be better off than before. Sites like stackoverflow make programmers more productive in aggregate; we would be worse off without them. If you can't understand why someone would decide to offer their help for free then at least try to be thankful.