Now, let’s look at some other sources of expected results, in addition to the specs:
– Life experience
– Common sense
– Valuable opinion
– Other sources
Whatever we learn browsing the Web, reading books, working, studying, communicating, etc. is accumulated into the precious container called “life experience.” Therefore, when there is no spec, we can dig up something from our life experience and give a reason why the expected result should be such and such.