Why not take the time to get to know the individuals you are dealing with?
The business analyst side of me says that is an inefficient use of resources. Frequently--very frequently at Verizon--I found myself working with teams in various parts of the country on projects. We always had tight deadlines to meet. There was not always time for face-to-face meetings. In that kind of high-pressure, fast-paced environment, there is no time to get know anybody. So leaning on trends & tendencies, along with plain old professional conduct, was about the best we could do.
People create these "trends" and "tendencies" because it gives them a product to sell to others. Books, seminars, lecture tours, it's become an industry.
Incorrect. Marketers do not create the trends & tendencies, we identify and measure them. They are created organically among groups of people. Once we have them identified and measured,
then we figure out how to sell products.
It can also help create the false idea in people that they should themselves comply with these "trends" and "tendencies" whether the "trends" and "tendencies" fit them or not.
To the extent that trends & tendencies translate into social codes, compliance, non-compliance, and the risks & benefits of each are managed by societies and each individual's interaction with their society.