examples I have used I have often given the first situation where a type of event occurred to illustrate my point, which explains why except for one example, all The other examples all occurred during those four decades. It may be useful to note the interesting parallels in each of the past decades. The 1960s can be considered an exception; The remaining decades all had a period in which most people believed that external influences were too great and too numerous, beyond the control of the management apparatus of businesses, when even The wisest stock investments often turn out to be foolish and probably not decisions made by wise people. During the 1930s, which was affected by the Great Depression, this view reached its most negative level; But perhaps nothing had a greater impact than the fear that the German war machine and the Second World War would have consequences in the 1940s, or the certainty of another great depression. would happen in the 1950s, or inflation fears, anti-government actions, etc. in the 1970s