Movie Inception!

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i just watched the movie "Inception" and i was inspired by it in terms of exploring another deep aspect of our mind/brain. majority of the parts of the movie presents actual facts as i have read before (dreams,levels/trance,creativity,etc) except for the part that they use a device or potion to instantaneously go in a deep state of trance with full awareness. people with knowledge about psychology and hypnosis would relate to this. but poor me doesnt have any idea at all :( can this event be achieved? if so how? thank you for shedding some light..