In 2016, Professor José A. Esteban gave the conference “ What are memories made of? And where are they kept? ”At the Achucarro Forum of the Basque Center for Neuroscience. In it, the CSIC biologist and researcher spoke about synaptic plasticity and the development of therapeutic applications for diseases such as Alzheimer’s. It has always been a curiosity that how much information can our brain store?
Thinking about the content of the talk, the first thing that came to mind were a couple of recent articles. On the one hand, the tweet from Vala Afshar, Chief Digital Evangelist at Salesforce.com, commenting on the Constellation Research study on the importance of Big Data, Analytics and Data Mining (again) at this moment in history in which 90% of the data in the world was created in the last year.
On the other hand, the creation by scientists from the University of Southampton in the United Kingdom of a new data format that, by storing information in crystal nanostructures, has achieved an expected life time of 13.8 billion years of expected survival for said support.
You don’t know where to store 360 terabytes of data and you may have to put it at 190º of temperature? No problem! We have the perfect hard drive for you thanks to a scientifically proven 5D storage technique. So I got to thinking, how much information can we remember? Will it be more or less than what can be generated in a lifetime? And what about the one that has been generated throughout history?
The information peta
To estimate how much information could be generated, nothing better to do this than to look for the leaders in information processing. In 2011 Eric Schmidt, CEO of Google, the company that wants to order the world’s information to make it accessible, said that humanity generated 5 exabytes of unique information every two days on the Internet .
What is that? Bernardo Hernández pointed out in these parts that it is as much information as from the beginning of history until 2003, all together, at the same time, without anesthesia. As there were people who did not quite square the figure, Science magazine decided to recalculate, concluding that we have generated about 600 exabytes up to 2011. And how much is an exabyte? Much.
1000 kilobytes = 1 Megabyte
1000 Megabytes = 1 Gigabyte
1000 Gigabytes = 1 Terabyte
1000 Terabytes = 1 Petabyte
1000 Petabytes = 1 Exabyte
1000 Exabytes = 1 Zettabyte
1000 Zettabytes = 1 Yottabyte
1000 Yottabytes = 1 Bronobyte
1000 Bronobyte = 1 Geopbyte
So of course, a skill that is becoming essential to survive in this modern environment is a hypertrophied memory, whatever they say. Therefore I needed to have an idea of our maximum capacity to memorize in order to determine if everything we generate fits or not.
Robert Birge , a professor and researcher at the University of Connecticut who analyzed the storage capacity of proteins, estimated it to be between 1 and 10 Terabytes in 1996, assuming that a neuron was a bit. Closer in time, in 2008, he considered in a radio interview that it could actually be something closer to 30 or 40 Terabytes , given that the brain does not store information in the same way as a computer.
In any case, it seems insufficient to reach our goal, so a solution must be found. On the one hand, it is hopeful to remember that the brain forgets things, leaving room for new memories. We all have things we want to forget (those over 40 years younger because there are no compromising photos of us on the Internet of when we were young, for no other reason). But it is also true that we could forget what we should not.
No, in these topics we better bet on the Diogenes syndrome of memories, we are not going to forget any important anniversary for our partner, such as his birthday or Valentine’s Day.
So we tried to keep asking to find out that depending on who we talk to we can reach the magic Petabyte number. The calculation in this case comes from estimating 100,000 million neurons with 1,000 synaptic connections each, taking each connection instead of each neuron for 1 bit.
The confirmation comes to us by a team of researchers from the Salk Institute led by Terry Sejnowski estimated in a paper published in eLife at the beginning of 2016 that it could be considered to go from tera to peta without problems since the synapses were not all the same, and that the different types could allow estimating up to 4.7 bits of information for each one .
What’s more, in some cases there is even talk of a maximum of 2.5 Petabytes . Paul Reber gives us an idea of the impact of this difference in capacity in an article in Scientific American .
In it, this professor of psychology at Northwestern University explained that this amount would allow 300 million hours of television to be stored . Of course, what he did not say is that it was not in HD, so I do not think that with that quality we can survive our challenge: 1 petabyte in HD quality is barely 13.3 years of video , very little if we are looking for true love and for all life.
An image and thousands of words
I admit, this first approach is discouraging. It was urgent to find solutions. So my next step was to try to determine the maximum potential of our memory . If it was greater than the information generated we would still have a chance. We have already left behind the mistaken idea that we only use 10% of our brain, but it is still clear that we cannot use everything at once and that we have it quite underused.
How do you get to use it in such a way that it is possible to memorize everything you can memorize? The next one seemed obvious: we had to find the great memorizers of history , see what they were capable of and compare it with the limits.
Unfortunately, it seems that many of the best known cases of “infinite” memories were the result of trauma or unwanted situations and, what is worse, not easy to repeat without putting our integrity at risk to achieve it. An example of the risk we talked about was the old case of Cenn Fáelad mac Aillila , an Irish scholar who died in 679. Although what is called a scholar was actually scholar, it was not very scholarly. Come on, his thing was weapons and fighting.
Precisely in one of them he got a good wound on his head, which resulted in a wound that caused him pain all his life on the one hand, and an elephant memory on the other. What’s more, it is said that he did not manage to forget anything else during the rest of his existence. To understand the harsh implication of acquiring this superpower we must know that Cenn, after obtaining his new condition, completely changed his life to devote himself to poetry and learning Latin, instead of enjoying with friends from the “third time” after the battles .
Recent literature has also treated the subject with interest. Forges wrote about ” Funes the memorable ” telling in his collection of “Fictions”, back in 1944, the story of a man who suffers from hypermnesia after a common accident: a fall, in this case from a horse.
Curiously, his new gift is also associated with another headache, this time that of not being able to sleep (a big mistake, as we will see later). The absence of sleep and the premise that this process is a “memory eraser” means that the protagonist has, during his short life, a memory full of details but a total inability to think and make use of them. I was on the right track … well, you understand.
Closer in time was the case of Kim Peek , who inspired the character of Raymond Babbit in the movie “Rain Man.” Kim did not have any accidents during his life as his ability apparently originated before his birth. After Kim was born, the doctors told his parents that the child was not normal and that he would have mental retardation all his life, so they even recommended admitting him.
They refused to discover as he got older certain abilities that contrasted with the evident delay that he actually showed, as they had been diagnosed. Little Kim had been reading since he was 18 months old. Well, the reality is that he memorized the books his father read to him and he didn’t need to read them ever again to remember them. At the age of three he went to the dictionary, which he also memorized, to finish with what is estimated to have been around 9,000 books in his life.
As in the case described by Borges, his great memory and other abilities did not help him in his day-to-day life (coordination problems) or in analyzing or drawing conclusions. Apparently the reason for his ability would be related to the absence of a corpus callosum in his brain, causing his neurons to form a compact mass of connections that amplified his capacity, combined all this with an evident case of macrocephaly.
Kim’s father met Barry Morrow, the scriptwriter for the film “Rain Man,” at a conference in the State of Texas in 1984. The film introduced the “Sage Syndrome” or Savant into our lives, studied by Darold. Treffert. A “Savant”, or virtuoso of the arts in French, is a person who despite some physical, mental or other disability, possesses other skills that are normally developed at a much higher level.
It is associated with autism although it is estimated that less than 10% of autistics have abilities of this type . It is also estimated that half of the Savants are autistic, which does not help us much in our search (safe and without risk to our integrity) for an infinite memory. In a century of study, a maximum of one hundred people with this capacity are calculated. Treffet himself considers that less than 50 exist right now in the whole world with it. Other researchers, such as Snyder or Mottron and Dawson, tried to find the ability to induce skills, but without much success.
Looking for alternatives, I went to ” The Big Bang Theory” , which allowed me to remember that there is what is known as Hypertrophic Eidetic Memory or Photographic Memory. Yes, those people who remember everything, like Sheldon Cooper or Will Hunting. If they only remember things related to their own existence, we speak of a Highly Superior Autobiographical Memory (HSAM), of which it is estimated that 20 such people have been studied around the world (all in the USA). They are the “Google Humans” who suffer from hyperthymesia or excess memories. Unfortunately it is a quality that, coming as standard, can be lost if it is not diagnosed and worked on.
It appears suddenly and from that moment those who suffer from it begin to remember a large number of details of their day to day. In this case, Jill Price , who published a book about her case in 2008, can remember all the days of her life since she turned 14. Remember that at the age of 8, in 1974, you were beginning to be aware that something was not normal in your memory.
Unfortunately these people do not always have the ability to memorize anything, usually their memories are focused on aspects of their own life. They also do not use techniques or mnemonic rules that can be learned or replicated by others, or managed or improved. There are several recorded cases besides Jill Price (the long time patient AJ), all of them very similar.
For example Brad Williams, Rick Baron or Marilu Henner, star of a TV series in the US, which is the place of origin in most cases. The study of these patients by a team from the University of California at Irvine, led by Dr. Parker, has helped to better understand where and how data is stored in the brain.
It has not helped so much to the bearers of this gift, since as Jill herself has the negative part of spending much of her life in the past, of not being able to identify what each key is for , of suffering problems with recognition facial of people and also showing obsessive-compulsive tendencies.
Become a Foer
At this point on the road it seems that the alternatives to have a memory “in keeping with the times” were having an accident waiting for luck to smile on us, inducing a genetic or birth anomaly and little else. Is there no other way to get an elephant memory?
A journalist in the United States dedicated a year of his life to finding the solution to this problem. Our great man is Joshua Foer , who decided to leave everything to better know the people who were professionally dedicated to developing their memory, even training himself for the memory championships in the USA.
Without any prior knowledge of the subject, or special ability, or natural genetics, he won the championship in 2006. He ended up writing his experience in a book, ” The challenges of memory ” can be found in Spanish, “Moonwalking with Einstein : the art and science of remembering everything ”in English. Joshua also gives TED talks explaining how “normal people” can expand their retention capacity.
One of his first discoveries was the millenary mnemonic techniques , such as the palaces of memory. Aristotle spoke already in his time of places where we were able to store content to be remembered. The thing did not remain in the past: the ars memorativa was discussed and studied in classical sources or medieval studies. Saint Augustine wrote profusely about memory in his “Confessions”, in fact the term appears about 100 times, and also refers to a place where we can access and where memories are kept.
Frances Yates in her book “The Art of Memory” (1969) confirmed how the ancient Greeks and Romans used a technique based on prior memorization of the arrangement of everything in a room or building. Joshua Foer includes in his the story of the Greek Simonides of Ceos, who was enjoying a banquet with friends in the 5th century BC when everything collapsed around him, most of those present perishing.
A survivor of the catastrophe, he suddenly became a history of memory when, abstracting from what happened and taking as a reference the columns, tables and general arrangement of the room, he managed to lead the relatives of the deceased by the hand to tell them where they were at the moment that everything changed in their lives. Joshua and the legend say that at that moment, with this practical demonstration of the Simónides technique, the study of memory began its official journey.
This is how the idea of using a physical “place” as a reference is the basis of this mnemonic technique known as the Loci Method (plural of the Latin term “locus” or location, location). We first memorize a “container”, a reference, for example using a building or a house, ultimately a place we know; we can even create one from scratch. Once it is developed, we design routes through it, to also have an order, a sequence that we will follow to move through it and that will act as a common thread, turning a complex task into a pleasant walk.
In this way we solve two important problems: remembering things that the brain has trouble remembering naturally, and remembering them in context even when they do not have them per se. The idea, later copied by communications engineers, of using a “carrier” of the message, which facilitates its transport and storage, is as old as our culture. Greeks and Romans in their ancient rhetorical treatises, such as the ” Rhetorica ad Herennium “, the oldest surviving book of rhetoric in Latin to this day (originating from the year 90 BC), already spoke of the places to store things in our memory.
Problem solved … for now
At this point part of the problem seemed solved. We could not confirm if the brain could remember all the information that is generated, but we did know that there were people who remembered everything , and that following Foer’s instructions, anyone could learn to memorize a large amount of important information, such as the dates essential to survive in a modern couple relationship. And after all, if Foer, a journalist, had been able to do it, anyone should be able to be.