3.1. Software Architecture Paradigm Shift
Unless you program telecommunications systems, video games, mainframe operating systems, or rigorously inspected software (e.g., CMM Level 5), almost every piece of software you will ever encounter is riddled with defects and, at least in theory, doesn't really work. It only appears to work—until an unexpected combination of inputs sends it crashing down. That is a very hard truth to accept, but experienced architects know it to be the case. In commercial software, nothing is real. If you don't believe this, invite a noncomputer user to experiment with your system. It won't take long for them to lock up one or more applications and possibly invoke the Blue Screen of Death.
In order to cope with this ...
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