Technology is another great force for change. In part, technology has caused the population explosion; many of us won't now be alive if it weren't for advances in health, 【M1】 ______ agriculture and industry. But in part, technology helps resolve the population problem, either. It's a never ending cycle. The 【M2】 ______ need for more food discourages development of better 【M3】 ______ technology which naturally keeps more people alive. And there are no going back to a simple, less technologically 【M4】 ______ complex time. We're here. We're here. We're hungry. While technology makes this possible for four or even six 【M5】 ______ billion of us to exist, it also eliminates our job opportunities. In theory, it is impossible that all the goods and services the 【M6】 ______ world needs could be produced by only 2 percent of the population. This tendency of technology to make workers superfluous (过剩) but at same time allowing their numbers to 【M7】 ______ grow up so large is creating psychological tensions. 【M8】 ______ Traditionally, work determines our way of life. But if 98 percent of us doesn't need to work, what are we going to do 【M9】 ______ with oneself ? Something more than work must be found to 【M10】 ______ determine both income and meaning in life otherwise 98 percent of us could be both hungry and frustrated (沮丧) . 【M1】