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您可能不相信,在1980年至1990年的10年间,美国80％以上的专家所经营的投资组合,其收益比市场平均数还低,80％！五分之四号称“专家理财”的投资组合,不论它是共同基金、捐赠基金或养老基金,其收益居然比单买进道·琼斯工业平均数的股票还差！尽管是很让人泄气,但80:20法则却弥漫于社会上的每一个角落。当您看到邻居五金店老板,问问他什么货最畅销,您会发现20％的五金产品销售额占总销量的80％,其它80％的存货占总销量的20％,可见其为失败的产品。广告方面也符合80:20法则,每100元的广告支出,有80元是浪费的,只有20元真正吸引人们对产品的注意。但问题在于事先难以确定哪20元产生作用。投资也是一样。
You may not believe that over the 10 years between 1980 and 1990, more than 80% of the U.S. experts ran a portfolio whose returns were 80% below the market average! Four out of five called “expert money management” portfolios, whether they are mutual funds, endowments or pension funds, actually yield less than the average single stock bought in Dow Jones Industrial Average! Although it is frustrating, 80:20 rules permeate every corner of society. When you see the neighbor’s hardware store owner, ask him what the best-selling goods, you will find that 20% of the sales of hardware products accounted for 80% of the total sales, and the remaining 80% of the total inventory of 20%, showing that it failed The product. Advertising is also in line with the 80:20 rule, advertising costs per 100 yuan, 80 yuan is a waste, only 20 yuan really attract people’s attention to the product. But the problem is that it is difficult to determine in advance which 20 yuan effect. Investment is the same.