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Or watch year-old Amira Willighagen masterfully sing opera after teaching herself with YouTube videos for four years. Something big is happening here, and these young prodigies are the harbingers of it. While the explosion of knowledge is making it impossible or at least more difficult for anyone to know everything, it has also made it easier to find one big, atypical combination of fields or skills. First, one of the main ways that new skill sets, industries, and fields emerge is by combining them with old ones:.

Second, the number of new academic fields and business industries is increasing exponentially. And finally, as the number of new skills increases, the number of possible combinations increases exponentially. Every new chunk of knowledge can theoretically be combined with every other knowledge chunk. Every new breakthrough creates the potential for exponentially more breakthroughs.

Two-man rule

If you have one building block A , you can only make one combination A. Once you get to four building blocks, you get to 15 possible combinations, and the numbers grow dramatically from there. Now consider that there are thousands and thousands of disciplines, industries, and skills. Each new one creates the potential for tens of thousands more.

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Below are a few of the many thousands of fields that were created very recently through combination:. Bottom line: when I was in high school, I remember reading how a young Leonardo Da Vinci was frustrated that he was born in a period where everything worth being discovered had already been discovered. This quote stuck with me, because it was written by one of the greatest inventors in human history. Almost ALL of the potential discovery that humanity will do is in the future.

Birthday problem - Wikipedia

What do the following six professions have in common? Answer: None of them existed 15 years ago. The headline below shows just how valuable a driverless car engineer is. So what skills are going to be valuable in 20 years? Do you know? Neither do I. Neither does anybody. So the question arises, how do we make investments in knowledge now that will pay off far into the future? A polymath can take the skills that she or he has learned and combine them in new ways quickly to master new fields. On the other hand, a specialist whose fields becomes obsolete would likely take much more time to adapt to the change and have to start back at the beginning.

Each one is going to require new skills. Many of the largest problems that face society and individuals benefit from solutions that integrate multiple disciplines. As the chart below shows, diet and obesity account for four out of the top fifteen causes of death in the United States. Millions of deaths that are completely preventable. From the outside, you could easily say that solving the obesity crisis is an easy problem.

Just eat less and exercise more. Not quite. The chart below from the Diversity Bonus book by researcher Scott Page shows a portion of just how complex the obesity epidemic is. As you can see, many different fields are needed to solve this problem: exercise physiology, genetics, behavioral psychology, sociology, economics, marketing, general psychology, education system, nutrition.

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One of the most fundamental mental models from economics is supply and demand see more valuable mental models. In this model, there are two ways to increase how much of a price premium you command:. Want a quick test to see if you have rare and valuable knowledge? You want to be fearful when others are greedy. The weakness of an art is its dogma. Being a polymath will be the new normal, and polymaths who synthesize diverse skills to create breakthrough innovations and solve complex problems will have a huge impact.

Generalists who fail to synthesize their knowledge into value for others stand to flounder in their career, perhaps having an impressive encyclopedic knowledge, but no real impact. Meanwhile, specialists risk getting trapped by their success.

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They build up a narrow skill set and reputation and become highly paid for it. But their careers are fragile. As their professions disappear or evolve, it becomes almost impossible to switch without having to start over. As new paradigms of business emerge or their passions grow, they can quickly combine their existing skill sets in a myriad of ways. Now that you see how important it is to become a modern polymath, the next logical question is: how? I created a resource to help you with just that….

I Need Two

The idea of becoming a modern polymath can be overwhelming. Where do you start? What field do you learn first? How do you find the time? How do you translate what you learn into real world value? When I first started learning across fields, I stumbled. It was slow and not that useful. In other words, I picked the wrong discipline for me to start with, and I used the wrong method to learn it.

After a lot of trial and error, I learned techniques that make going across fields faster and easier. First, mental models transcend disciplines. They are the invisible links that connect disciplines together:. And so on! Furthermore, mental models help you learn multiple skills much more quickly, because they gave your a stable base of useful and universal knowledge that you can use for the rest of your life. In short, mental models are key to becoming a better polymath. In our Mental Model Of The Month Club, we delve into a different mental model every month that will help you become a polymath.

We also show you how to combine those models to make better decisions and have creative breakthroughs. By joining, you immediately receive our best Mastery Manual. My team and I have spent dozens of hours creating it. Special thanks to my partner in the Mental Model Of The Month Club, Eben Pagan, for sharing dozens of conversations on this topic over the past two years. Many of the ideas in this article are a result of those conversations. Becoming a polymath is just one of many approaches to learning faster and more effectively which I share. If you are an individual who is over the age of 80 that also has cognitive mental capability delays and signs of dementia.

They found that a hearing aid on both ears was overstimulating in a noisy setting. They attributed it to the fact that somewhere in the central nervous pathway the two speech signals would actually cancel each other out. It is obvious to most, that if you have hearing loss on one side but not the other that you would only need one hearing aid, and for the most part this is true, however, there are some circumstances where and individual feels off balance with only one hearing aid and will sometimes purchase two hearing aids to gain a sense of equality between both ears.

When an individual has hearing loss on both sides that requires a hearing aid for both ears it will double the cost of the purchase. Some individuals can not afford two hearing aids whether they need two or not. In these situations it is important to understand that the investment of one hearing aid will benefit the user substantially when compared to no amplification.

The hearing aid wearer will not be able to take advantage of the benefits that come from wearing two hearing aids, but no damage or residual effects will occur from using only one hearing aid. The only way to make the decision for those who are still on the fence about it, is to put both hearing aids on to see what the effects are for them. This can be done in a trial period to see if the benefits truly outweigh the cost. In an individuals place of residence, work, and social function, they will be able to decide for themselves if the benefits outweigh the cost for them.

In my experience and according to all of the research, if an individual has hearing loss on both sides, the benefits of using two hearing aids will typically outweigh the cost and most find this out for themselves when they try it. It is recommended that everyone discuss their specific situation with an audiologist, as every individual and their circumstances differ. Hurley, R. Onset of Auditory Deprivation.