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Christopher Halliwell

Secondary Education Physics, Mississippi State University

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What is the advantage of evolving the ability to cry?

Is it simply a result of evolving the ability for complex emotions?

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    Mar 20 2013: I'm gonna try to give an educated guess. Crying happens on different scenarios for different reasons. Your eyes tear when a needle pinches you, when dust particles enter the eye, and also when someone hurts you emotionally.
    Crying or tearing is a common response to physical or/and emotional pain. When you something external acts on your body, it reacts. Physical pain: tears and crying are involuntary, so when you cry from pain, your body is going on defense mode, it wants to relieve the pain and wants it to go away. The chemical reactions in the brain that trigger crying might also reduce the pain as byproduct. However , crying's function may differ with stages in life. Infants for instance, cry when their body is in NEED of something i.e. food, diaper change, sleep >>> all for one thing, healthy upbringing, survival and to bring offspring. another stage in human's lives, lets say (2-7yrs old), you often see them cry more when they are denied something they want (candy) rather than physical pain. when they cry they range from cute convincing watery eyes to volatile annoying tantrums. Well I'd say they get their way 50-50, but thats not essential for survival as in infants. So why do they cry when they want something? I really don't know, but if I had to say, its the human's obsession with instant gratification. If you always get what you want, you are happy and you have a brain full of Dopamine(happy chemical), it could possibly also mean a healthier brain and body. Thirdly, eyes tear when dust or other foreign particles enter the eye. The tears gather all the foreign objects and mechanically by gravity leave your eye, and clearing your eyes from any risk of disease. I have no knowledge of how tears evolved from species to species. All this infromation I wrote might be completely false. I am only typing this from my head. kinda went with the flow of this website. whew... this is my first on this website, pretty inspiring..

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