In 30 years of doing consulting on 'systems' work, it's astoundingly rare to see documentation of any sort that accurately & completely represents the current r

In 30 years of doing consulting on 'systems' work, it's astoundingly rare to see documentation of any sort that accurately & completely represents the current running state of the system. Sometimes it's close, but more often than not it's whatever was presented to get budget before any development has started. Occasionally, the folks involved actually believe their doco does represent reality. They are invariably wrong, sometimes in small details, usually in large ones. Tools like this are an invaluable check on reality. > Have systems gotten so messy and complicated that we build them without knowing they're actually doing, until after they're built? Yes, in general, at least in my world (medium size to enterprise). Agile has made this in practice much much worse.