有研究表明 ,在农业经济条件下 ,人们从学校获得的知识基本可以适用一生 ;在工业经济条件下 ,人们从学校得到的知识的半衰期可能是 1 0～ 1 5年 ,而在知识经济条件下将缩短为 5～ 7年。现在光纤通讯速度 9～ 1 2个月增加一倍 ,芯片计算能力每 1 8个月提高一倍 ,信息总量则从 1 Studies have shown that under the condition of agricultural economy, the knowledge people obtain from the school can basically apply for a lifetime. Under the condition of industrial economy, the half-life of knowledge gained from school may be 10-15 years. Under the conditions of knowledge-based economy Will be shortened to 5 to 7 years. Now optical fiber communication speed doubled from 9 to 12 months, the chip computing power doubled every 18 months, the total amount of information from 1