AS a matter of fact,it was not a prime time of invention or innovation over the past 50 years.There were not only automobiles,aeroplanes,telephones and radios but also nukes and computers which changed the lifestyle of mankind during the period from 1900 to 1950.Whereas,there was little invention in the recent 50 years.Is it because the source of invention has been exhausted?In fact,the answer is not,the new epoch of invention has just started.
顺便补充下：黄金时间应该是prime time 而不是翻译成字面的golden time