Rapid learning already exists in society, but only rarely does it occur to such an extent that it might be considered a super power. Gifted children learn more quickly, more broadly, and more deeply than non-gifted children. However, there are variances among gifted children as well, although standardized tests have difficulty separating a super genius from a "plain" genius.
Many people have sought and continue to seek ways to increase and surpass the current levels of intelligence present in society. One proposed method is a brain-machine interface, which would allow a human to access data stored electronically, rather than biologically. We are currently in the early steps toward achieving this goal, though much progress remains to be made.
Another proposed method of enhancing individual intelligence deals with our genes. If you're born a genius, then you're set. If you're born of average intelligence, then you still have a ways to go. So why not start off a genius? In order to achieve this on more than just a random basis, genetic manipulation has been proposed. If we could tweak the genes of our children, we could theoretically make them smarter. However, many ethical issues arise when dealing with genetic manipulation, and invariably one must question whether humanity was "meant" to pursue that field of inquiry. Perhaps to do so would be dangerously close to playing God.
A less scientifically-demanding, and yet still effective method of increasing the collective intelligence of future generations is the use of eugenics, or selective breeding. This too has many ethical considerations that must be weighed, as it involves controlling reproduction and dictating who is fit to have children. Under the strictest guidelines, humans would be bred like racehorses, with the best and brightest mated to each other, and the average folks not permitted to have children. However, there is a great shortcoming to this method, in addition to removing fundamental human freedoms. When you pick and choose the traits you "need" and discard those you don't, you might leave yourself unprepared to handle a sudden plague or other threat, which could have been otherwise counteracted by a certain trait that went overlooked. The eugenics method is far more complex than it would seem at first glance.
One theory of intelligence sees the brain as a sort of grouping of components, which separately perform independent functions, and together create a conscious, thinking individual. If you were able to connect your brain to someone else's, your thinking power would more than double. Each of you could draw on the unused brain power of the other to solve problems that individually you could not. You could also share memories and ideas, and think more quickly than usual. Imagine if you added a third person to your group. With all three minds connected, your collective intelligence would be phenomenal! What if you could make a group with more than three people? How about three hundred? How about three billion?
Believe it or not, some people believe humanity is collectively evolving into a higher state of being, in which we are all interconnected mentally. If that were the case, and intelligence truly is additive, the collective intelligence of the entire planet would be unimaginable. It is theorized that if we ever do reach this state, which is called a noosphere, our individual personalities would not be lost, but rather heightened. At the same time, we could each draw on all information known to everyone on earth, meaning we'd all know everything!
Another idea concerning making people smarter deals with artificial intelligence. If a computer were to become self-aware, it could theoretically reprogram itself to continually upgrade its own intelligence, until it reached a point where it would be so smart it could be called ultraintelligent. At this point it could invent technologies that we at present can only dream of. This point in time is called the "technological singularity." After this moment, humans will apparently not be able to adequately contribute to the development of new technologies, as the new intelligence will far surpass our ideas and speed of thought. Many people believe a technological singularity is fast approaching, and so are taking steps toward preparation. If this ultraintelligence were benevolent, perhaps it could develop human-machine interfaces and allow us to share its intellectual capacities. Then we, too, would become ultraintelligent. Hopefully it wouldn't enslave all of mankind…
It's also possible that a computer could never outthink a human, simply due to some overlooked biological quality we possess. If that were the case, perhaps a conscious computer could exist, but we'd always be one step ahead. Or maybe ultraintelligent computers are on the horizon, but a separate form of ultraintelligence will be discovered in humanity, which will allow us equal or greater footing and control.