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The frontiers of science continue to expand:
In experiments on mice, scientists rewired the circuits of the brain and changed the animals' bad memories into good ones. The rewriting of the memory wasn't done with drugs but by using light to control the activity of brain cells. While science is a long way from achieving a similar feat in people, it adds to a body of research that is starting to uncover the physiological basis of memory.
Yes, I know what you're wondering. And the answer is yes:
The researchers said they were able to do the opposite as well—change a pleasurable memory in mice into one associated with fear.
So I guess that wraps up both Brave New World and 1984 all in one nice, neat package. What could go wrong?