The study, published in Current Directions in Psychological Science warned, there is a limit to how smart humans can be, and every improvement in the ability of thinking tends to follow a problem.
To prove it, researchers Thomas Hills of the University of Warwick and Ralph Hertwig of the University of Basel examines human evolution to understand why people can only be as smart as it is today can not be more clever and more.
"Sacrifice common in evolution. For example, a height of 2.4 meters it looked interesting, but most of the heart no longer pumps blood that high. This makes the average person's physical condition is only as high as 1.8 meters. There are tradeoffs for intelligence as well as physical changes, "they said as quoted by DM.
Cognition enhancing drugs like Ritalin and Amphetamines was able to help people pay more attention, but if taken one who can pay attention to something better, this drug can take effect instead.
This shows, there is a limit on how much people can pay attention. Memory like a double-edged sword, if nothing bad happens people want to forget where on the other hand, the stress disorder, people can not remember the bad, he explained.
"Given all these sacrifices, impossible to have a super mind. If you have a job that requires more memory or speed or accuracy or whatever, you can eat enhancing capacity. But it would be wrong if you think this will improve your skills on all sides, "he concluded.
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