I don't think so. I once heard a story about an elephant at a circus that had a huge chain tied around it's foot so it couldn't get away. As it got bigger and older, they eventually reduced the chain to a length of rope, that the elephant could have easily broken. But since it came to believe that it couldn't break it since it was small, it never even tried.
Point being, before you can do something, you have to believe that you can. If you believe that something is impossible and cannot be done, (even if it really can) then your right.
That's not really a great analogy. For one, we're dealing with sapient beings here, not animals that are trained not to struggle against their environment. Moreover, the elephant at one point
wasn't able to break out. In this case you're trusting
no one to
ever try to get past these things
at all.
Put it this way: if you were always told that your parents were watching you all the time as a kid and that they'd isntantly know the moment you did something wrong, do you think you'd live with that thought for long? No, because all it takes is one instance where you get away with something for that whole illusion to come crashing down.
Same with this thing. All it takes is for one person to try mind-reading, or for someone who doesn't know what the headset
is to try mind-reading, for that whole system to fall apart.
"You've all been selected for this mission because you each have a special skill. Professor Hawking, John Leslie, Phil Neville, the Wu-Tang Clan, Usher, the Sugar Puffs Monster and Daniel Day-Lewis! Welcome to Operation MindFuck!"