The problem with using stack overflow as your dataset is most of the programmers on the site are interested in expending their technical knowledge. So if 50% o

The problem with using stack overflow as your dataset is most of the programmers on the site are interested in expending their technical knowledge. So if 50% of "young" programmers are on stack overflow but only 20% of "old" programmers are on stack you get results that don't indicate the actual population. The only thing we can actually gather from the data is that with "programmers on stack overflow older is wiser."