In The New Hacker’s Dictionary under “superprogrammer,” we read that “productivity can vary from one programmer to another by three orders of magnitude.” I would argue that at least one of these factors of ten comes from the ability to quickly recognize what algorithms should be used to solve different parts of a problem and to find or write implementations of those algorithms that will result in an efficient program, given the available time and the characteristics of the problem. This ability is developed through experience and by understanding the highlights of the large body of algorithms and analysis of algorithms that has been developed to solve problems that occur over and over again in computer programs.
Mastering Algorithms with Perl by John Regehr in Slashdot, 1999 December 8