What He Said
This story might help to illustrate why experienced engineers assume that any large software program will contain errors, and why they distrust anyone who claims otherwise. Getting a big program to run at all is an impressive feat of engineering. Making it error-free is too much to hope for. For the foreseeable future, software errors will be a fact of life.
Imported from an old blog. Some links might be dead. Let me know if you find dead links.