These kind of manipulations are as old school as one can get. Here is a classic reference from 35 years ago: https://en.wikipedia.org/wiki/Influence:_Science_a

These kind of manipulations are as old school as one can get. Here is a classic reference from 35 years ago: https://en.wikipedia.org/wiki/Influence:_Science_and_Practice https://en.wikipedia.org/wiki/Influence:_Science_and_Practic... Note that it covers tactics from door to door salesmen.