January 20th, 2005混沌不是无序,而是指定约束太少,要人为施加合理约束
Google vs. Yahoo
Yahoo was directory-based, with very limited content of a Web site. Maybe less than 50 words text description for a huge site.
Other “me-too” companies: results looked random, garbage-like
Google: impose the PageRank heuristics as sorting criterion, with more added later as criteria to sort the pages, making the results (especially the first page) look more relevant in a sense.