Another example we can take from painting is the way that paintings are created by gradual refinement. Paintings usually begin with a sketch. Gradually the details get filled in. But it is not merely a process of filling in. Sometimes the original plans turn out to be mistaken. Countless paintings, when you look at them in x-rays, turn out to have limbs that have been moved or facial features that have been readjusted. Here’s a case where we can learn from painting. I think hacking should work this way too. It’s unrealistic to expect that the specifications for a program will be perfect.
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