now i will give you an experience to cure expertise -- experiential blindness. now, when you look at this how many of you can still see a snake? not too many. want to do it again? it works better when i have a computer because i can just overlay one on top of the other. take it away. so for many people they can see the head of the snake, they can see part of the body of the snake, and again this is very similar to what happened with the white with the four pack that made the square. .... i just gave you an experience of a san snake for, what, ten seco. so your brain's ability to make that, to modulate its own neuron to make that image in your head is much weaker than to make a louisiana swamp which you have been make your whole life. so you have to practice. you have to practice being able to make a new simulation and if you practice it a little bit it will become easier to do so that eventually it becomes very automatic for you to do. so it is possible for you to change how you see things, absolutely. yep. >> two questions. this may be sort of semantics but whe