At which details all the reasons why you do NOT start from scratch. That these professed agreements seem in irresolvable opposition is an illusion: again, I think we are talking about different things. Rewriting Netscape may have been a bad idea, but rewriting a Perl script that transforms some data into other data probably is a good idea; and is especially so if reading the old code gives you a headache.
I think of it like architecture. Sometimes it would be silly to tear down a building and start over, but sometimes starting with dynamite is really the only path. So is it with software: there is a time to patch, and a time to scratch.
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Grokking the Source
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