If you have any doubt that software takes real skill, wade into the muck that is software written by scientists. You will discover classes of errors at all lev

If you have any doubt that software takes real skill, wade into the muck that is software written by scientists. You will discover classes of errors at all levels that you didn't even think possible. Testing? What's that? Exponential run time? Does that matter? And why does my program give different answers now than it did last year? Those numbers worked for my paper--make the program give them again!