[drunken monkey]

it's not that simple and i am not talking about fooling someone.
There are examples of people going into events not knowing the outcome and they each succumb to the "programming".
they didn't set out wanting to be believed. In some cases, it isn't even believing something, rather that the one doing the stunt can make you do/think something. This again, indicating of how the brain works and that it is just programming.

There's a guy called Derren Brown.
In one show, he asked to interview two advertising executives.
They went to the meeting place in a taxi organised by Derren Brown where they had a simple brain storming exercise for an idea.
They know who Derren Brown is and what he does and the excercise was to illustrate the power of subliminal messages and advertising.

In short, their eventual idea and conceptual sketches matched 994.873% (random number my own...) with what Derren Brown had drawn and sealed before they turned up at the office.

Apparently, along the route, there were lots of little things placed that you wouldn't actively notice but would ultimately immediately affect what they would end up drawing.
They were free to think of whatever they wanted and come up with any idea that they wanted and draw whatever they wanted. In the terms of this discussion, during the excercise, they were doing things out of their own "free will" except that free will was influenced by Derren Brown before they even stepped into the office.