Not only does this help point out mistakes you shouldn’t make as well, but it can also provide a way to really nail down your core product. For example, this is an extremely useful technique to use in enterprise software or any sort of complex application. If you can isolate the 10% of a complicated product that people use all the time, you can deliver an infinitely simpler product with an elegant user interface that will destroy the big, bloated monstrosities that people have grown to hate.
Wow, why am I not doing this all the time?
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