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As soon as the users start pounding away on your software, they’ll find bugs. (This is another software axiom. Bugs that were completely hidden from testers appear the instant users touch the application.)

Of course, when the users find bugs, you need to fix them. As mentioned earlier, fixing a bug sometimes leads to another bug, so now you get to fix that one as well.

If your application is successful, users will use it a lot, and they’ll be even more likely to find bugs. They also think up a slew of enhancements, improvements, and new features that they want added immediately.

This is the kind of problem every software developer wants to have: customers that like an application so much, they’re clamoring for more. It’s the goal of every software engineering project, but it does mean more work.