Most people do not have their own thoughts, most thoughts are manipulated/controlled/heavily influenced/etc.
For example on things you like or wear, most people wear what is modern or accepted, they wear what is on tv and what everbody else wears so they fit in.
When you buy things, tv ads, etc, can be very manipulative to create a desire or make you think you need it when you don't.
Sales in general, if you learn about sales techniques, etc, it's similar to the WT methods but you can manipulate and influence decisions.
People want to fit in, so they select a 'type' of person and you end up with usually 10 to 20 stereotypes and thousands/millions of clones of them.
Then the news media tell you how to think. When people were voting for President, they all didn't like either of those 2, but wanted to pick the lesser of the two evils and not 'waste' their vote. Is that because out of the entire country of 300 million and all those who were applying or would want to be President, that the best choice were 2 that nobody wanted or is everybody manipulated by the tv and news that everybody is going to vote for them, they are going to be the choice, so people end up doing it.
In so many words, most of the people in this world are sheeple.