Path: csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!news.swapon.de!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: Keith Thompson Newsgroups: comp.lang.c Subject: Re: [meta] how to attack a problem Date: Mon, 06 Jul 2015 07:48:49 -0700 Organization: None to speak of Lines: 24 Message-ID: References: <2a4c8144-f7c1-4afe-98f7-c6c122dbd39b@googlegroups.com> <6ee4ad4d-0b26-4526-aaba-54b9fd8c2101@googlegroups.com> <147f7dba-31b7-40a7-b2ac-358bd5eacb15@googlegroups.com> <5bbd72ee-3ca7-4b79-8161-7f3f695e23c4@googlegroups.com> <5b4b4a9c-9069-4bae-9e0d-674df7c4d594@googlegroups.com> <2892763d-ed2b-4bd6-a339-9d1915eb7ca6@googlegroups.com> <514dc4d1-36c2-40cf-83d4-f075364a4ca6@googlegroups.com> <159580d1-668c-4d83-ab8a-5f4549a57cd5@googlegroups.com> <53599f0e-8bad-4815-b514-f85fc0ea063d@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: mx02.eternal-september.org; posting-host="945944de09706c9b4e29b53c9d2efdc2"; logging-data="24332"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19LopgWmatHzuzQpTaNog6k" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) Cancel-Lock: sha1:mnQY7FHndA7Rg+uz7gI2Ojofx8Y= sha1:MxVbY4TIktspmr//ShFVLVRNIR4= Xref: csiph.com comp.lang.c:64757 maddoxr@acm.org writes: [...] > Actually, no. What I meant was that the problem and the solution are > opposite sides of the same coin, the white and black of the yin and > yang symbol, a single whole that we only perceive as separate parts > until we see the unity. Then we understand, and both the solution and > the problem are obvious. There are problems for which that's true, where once you understand the problem clearly enough, the solution is reasonably obvious. There are also problems for which that is definitely *not* true, where the problem can be understood from a simple and straightforward description, but the solution is *extremely* complex. Examples are Fermat's Last Theorem and the Four Color Map Theorem, both of which have simple statements but took literally centuries of effort to solve. -- Keith Thompson (The_Other_Keith) kst-u@mib.org Working, but not speaking, for JetHead Development, Inc. "We must do something. This is something. Therefore, we must do this." -- Antony Jay and Jonathan Lynn, "Yes Minister"