Limitless - Jim Kwik Page 0,11

DEMENTIA

When is the last time you had to remember someone’s phone number? I’m dating myself here, but I’m part of a generation that, when you wanted to call your friend down the block, you needed to know their number. Can you still remember some of your best friends’ numbers from childhood? What about the number of the person you talk or text with every day? You no longer have to, because your mobile remembers it for you. This is not to say anyone wants to or should memorize 200 phone numbers, but we’ve all but lost the ability to remember a new one, or a conversation we just had, the name of a new potential client, or something important we need to do.

Neuroscientist Manfred Spitzer uses the term digital dementia to describe how overuse of digital technology results in the breakdown of cognitive abilities. He argues that short-term memory pathways will start to deteriorate from underuse if we overuse technology. It’s the same with GPS. Move to a new city and see how quickly you become reliant on GPS to tell you how to get around. Then notice how long it takes you to map new roads in your mind—probably much longer than when you were younger, but not because your brain isn’t working as well. With tools like GPS, we don’t give our minds the chance to work. We rely on technology to do the memorization for us.

This reliance may be hurting our long-term memory. Maria Wimber of the University of Birmingham told the BBC that the trend of looking up information prevents the build-up of long-term memories. In a study that examined the memory habits of 6,000 adults in the UK, France, Germany, Italy, Spain, Belgium, the Netherlands, and Luxembourg, Wimber and her team found that more than a third of respondents turned to their computer first to retrieve information. The UK came in the highest—more than half of the participants searched online first without trying to come up with the answer themselves.7

Why is this a big deal? Because such instant information can be easily and immediately forgotten. “Our brain appears to strengthen a memory each time we recall it, and at the same time forget irrelevant memories that are distracting us,” said Dr. Wimber. Forcing yourself to recall information instead of relying on an outside source to supply it for you is a way of creating and strengthening a permanent memory. When you contrast that with the reality that most of us have a habit of constantly looking up information—maybe even the same information—without bothering to try to remember it, it seems we’re doing ourselves harm.

Is relying on technology always bad? Many researchers disagree. The argument goes that by outsourcing some menial tasks like memorizing phone numbers or doing basic math or getting directions to a restaurant we’ve visited before, we’re saving brain space for something that matters more to us. There’s research that says our brains are more like a muscle, rather than a hard drive that fills up. That the more you use it, the stronger it gets, and the more it can store. The question is: Are we making those choices consciously, or are we acting out of unconscious habit?

Too often, we outsource our brains to our smart devices, and our smart devices are making us, well, a little bit stupid. Our brains are the ultimate adaptation machines, capable of seemingly endless levels of evolution. And yet we often forget to give it the exercise it needs. Just as there is a physical price to always relying on the technology of the elevator instead of taking the stairs, so is there a price for lazy mental muscles. Use it or lose it.

In Chapter 13 (Memory), I will show you simple tools and techniques to remember anything from names and speeches to languages, faster and easier.

KWIK START

Take a minute to exercise your memory: Memorize the phone number of someone you communicate with regularly.

DIGITAL DEDUCTION

“In a digital-first world, where millennials obtain all their answers to problems at the click of a mouse or swipe of a finger, the reliance on technology to solve every question confuses people’s perception of their own knowledge and intelligence. And that reliance may well lead to overconfidence and poor decision-making,” says Rony Zarom, founder of the video collaboration platform newrow.8 The ubiquity of information about everything also means that there’s a ubiquity of opinion about everything. If you want to know how to feel about a hot-button issue, you can just