A recent CNN online article describes research regarding the experience of fear in humans. Apparently, the amygdala in the brain is at least partially responsible for the proper experience of fear, based on study of a woman whose amygdala has been destroyed by disease.
The interesting thing about this study is how this woman's lifeis affected. The total lack of ability to know or experience any form of fear has caused her to blithely take risks that could have killed her, because she doesn't have that slight fear or wariness that causes her to check and reassess situations that may be life threatening. She will approach people who she should know to avoid because she has no fear that they may cause her harm. Or she will do things that might otherwise kill her, such as picking up a snake without worrying if it could poison her.
The upshot is that lack of fear can be extremely dangerous and shorten one's life. But the ability to adjust the fear experience to treat post-traumatic stress disorder or to heal phobias is a good thing.
For the purposes of speculative fiction and plotting stories, however, the concept of this control of fear can be a great basis for a plot.
Ideas.
- Create or eliminate targeted fear responses. Say you have a character who is a government agent. She or he cannot feel fear of death--it has been eliminated. But they can feel everything else, including a heightened fear of disappointing their superiors or of failing their cause. Wouldn't that be a great modification to terrorists who want their suicide bombers to unfailingly deliver the packages? Or wouldn't it be a great thing for dictators or despotic governments, to ahve their soldiers charge into battle like rabid lemmings regardless of the circumstances? Scary.
- Behavior control as the new thought control. You could innoculate a society against touching substances, following trends, eating certain foods, believing certain beliefs, etc. that the government/religious group, political group, cult wants them to avoid. Selective application of fear or removal of it can channel the population into generally predictable models.
- The crazy/evil manipulator behind the scenes. Here's a really freaky-weird concept--you have some crazy person using such a technique to create great works of "art" on the planet using an entire country or ethnic population or geographic population as his medium.
- The ever-popular power play. Aliens/fairies/political or religious groups could use such a technique for control and conquest. Say an alien race wants to have the populations avoid certain areas of the landscape so that there are human-free zones. An ecological safe zone for wildlife could be created, or humans could be confined by fear to certain reservations.
- Fluid dynamics in populations: Herd the masses and mass behavior. And the fear could even be of something that doesn't exist. If it's of something that doesn't exist (e.g. it's a superstition) it would be omnipresent and dreadful. A fear of things that go bump int he night would keep people inside during the dark, have them avoid dark closets or such.
- Social Engineering, e.g. Update on Brave New World. Combine targeted loss of fear with targeted fears to create whole new societies.
- Medical fixes. We could cure obsessive behaviors like hoarding, or alcoholism and drug abuse.
- A takeover. Humans could be tweaked so that they cannot fear the alien invaders or the leaders of a particular religion or political party. Is that not akin to a religious experience, if you tweak the concept a little bit?
- Create the perfect soldier, intergalactic colonist, etc.. Genetic engineering combined with fear adjustments would provide a group of colonists or soldiers with the right tools for the job...especially if it were reversible. Self-applied "mental modes." Programmed fear settings that put her into the proper response mode for a particular show. Be it acting, dancing, sex workers, soldiers, cops, firemen, criminals, cage fighters, or the average Joe or Jane mundane individual seeking to be 'in the mood' for a romantic evenign with her lover...initiating a "mental mode" that would give them the edge to compete/perform in their field would make them highly functional.
Designer people with set or, worse, endlessly programmable behavior "channels"? Scary stuff.
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