Saturday, July 25, 2020

Physics and Technological Revolutions

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Oem Trivedi

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Physics and Technological Revolutions

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Global Views 360

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July 25, 2020

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IBM Quantum Computer, an innovation based on Quantum Physics

IBM Quantum Computer, an innovation based on Quantum Physics | Source: IBM Research via Flickr

As he witnessed the first detonation of a nuclear weapon on July 16, 1945, a piece of ancient Scripture “Bhagwad Geeta” ran through the mind of Robert Oppenheimer: “Now I am become Death, the destroyer of worlds”. Oppenheimer, alongside the likes of Richard Feynman, Enrico Fermi, George Gamow, was part of the star-studded Physicist squad behind the Manhattan Project.

The biggest implications drawn from the end of WW2 for many might have just been the incoming power Struggle between the US and Soviet Union, but for your average American it went to a great length to show that Physicists form a breed of people who can build dangerously effective technology.

That fact, however, would have been evident to anyone with a brisk walk through Human History itself. Physicists have arguably provided the most significant contributions to the Technological Development of our race. From Archimedes building light reflectors to save the Greek Army from Roman Infiltration to the large-scale Ballistic Missile systems made during WW-II, weaponry technology has been highly influenced by physicists in every generation.

But mere list of armaments cannot do justice to the role played by Physics Research in Technological Developments of our society. To get a feel for that, let’s go back to the fathers of Modern Physics as we know it; Sir Isaac Newton and Galileo Galilei. Galileo had his long list of achievements in creating cutting edge technology of the day, ranging from Telescopes to Thermometers & the Magnetic Compass. Sir Isaac for his part was the reason behind the advent of the Industrial Revolution in Great Britain!

The simple Atwood Machines which have today become mainstay material taught to College Freshman and High School Seniors worldwide, were actually the kind of mechanical models on which the large-scale Factory Machines were built. Newton’s laws kickstarted the modern Technological Revolution and ever since then, Physics has been a constant source of inspiration behind all Technology.

The great pioneers in the field “Natural Philosophy” (the physics of today) after Newton continued the trend which their illustrious predecessor had started. The seminal works on Thermodynamics by the likes of Lord Kelvin, Ludwig Boltzmann, James Clerk Maxwell etc. played the decisive part in creating automobile engines and really any technology which dealt with heat (Spoiler Alert- There were a lot of them!). Maxwell’s work on the famous equations on Electromagnetism now named after him played the most significant part in the mission of making Electricity available to everyone (a conquest now just famously remembered for the fight between Nikola Tesla and Thomas Edison).

While one can point out that Theoretical works cannot lead to new Technology on their own, that assertion is only the half-truth. Sure, building technology on the basis of theoretical physics is mostly down to the Engineers, but one cannot underestimate the effect new theoretical developments and their possible uses have on the construction of new technologies. After all, if one was not able to understand the principles of the conversion of mass to energy or Electric & Magnetic Fields are coupled to each other, then expecting the construction of Nuclear Reactors and virtually all Electric Tech today would have been off the table.

So one might ask, what are the new theoretical ideas which can guide the next leap forward technologically? Well, no one can be quite sure of the form which technology will take in even a couple of decades (who would have thought that Server systems designed for efficiently using giant Data in CERN would one day be heavily used for making memes!).

I would go as far as to say that we have not yet completely exhausted the technological possibilities of the Special Theory of Relativity itself, the most prominent example of game changing technology based on that has been GPS Communication systems. One can hence fail to even imagine the kind of technological (and Industrial) progress technologies built on the revealing concepts from General Relativity and Quantum Mechanics can bestow upon us (I’m even refraining to comment on the Quantum Field Theoretic parts!).

Whatever that physics will lead us to is a mystery time will be most suited to answer, but one can see the effects of Quantum Mechanics in the next Computational Revolution itself; Quantum Computing. To put into perspective the extent of development Quantum Computing can bestow upon us, consider the following.

Computational devices today, which are stronger than the computers which put humans to the moon, are fundamentally built upon binary bit systems. From generating Big Bang like Energies in CERN and reaching past Saturn, to making all the knowledge available to everyone has been done in two bits. While Quantum Computers, which are being vividly researched on, can work with virtually infinite bits ! So, hold on tight as exciting new physics promises some large-scale changes on our Civilization as a whole.

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February 4, 2021 4:54 PM

Neuralink: Elon Musk’s quest to achieve a symbiosis of Brain and Artificial Intelligence

The memory of using YouTube for the first time is still clearly etched in my mind. One day we heard the sound of a song coming from the other room, startled by the noise, my brother and I went to investigate. We saw our father surfing in the wondrous world of YouTube where you could play any song without having to buy CDs anymore. It just bewildered us.

What Elon Musk claimed recently shows the distance technology has covered since then. He made headlines recently claiming that  his latest innovation Neuralink,will make it possible to, streaming music directly into our mind. Yes, the CEO of Tesla and SpaceX is back with the new episode of ‘Science fiction turned into reality.”

Musk describes Neuralink as a medium for a symbiosis of Brain with Artificial intelligence. The human brain is essentially an astonishingly powerful supercomputer which runs on power equivalent to the one used in a 20Watt electric bulb.

What Musk wants to do through Neuralink is to fit a tiny chip inside our brain, which can download all the processed information which is travelling from neuron to neuron. This chip with some threads that have the diameter of about tenth of human hair will have the potential to record and stimulate neurons across different brain areas. A Neuralink designed robot will fit electrodes containing threads using sewing technology into the brain. The technology is wireless, so at least you do not have to worry about wires hanging from your head.

Neuralink, launched as a Medical enterprise in 2016, aims to fix blindness, motor abilities, speech and much more. Although the purpose seems benevolent at first glance, we are talking about Elon Musk, the real-world Iron Man. Elon is anxious and fears Artificial Intelligence taking over Humans. He wants us to develop our intelligence potential by accessing our action potential, so that AI does not turn on its creators. For that sole reason (plus the monetization), the Brain-Machine Interface of Neuralink will be accessible to everyone.

Of course, every invention is at the centre of the doubt initially. The case of Neuralink is fascinating and problematic at times and is not different than any other path breaking innovation. Neuralink is going to change the course of human history and will literally turn us into Cyborgs and thus, causes cynicism among a large section of scientists fraternity.

The biggest and fundamental problem with the Neuralink is that it seeks to reach symbiosis of AI and the brain, an enigmatic organ about which we barely know anything. Those who support it argue that we do not need to understand how the brain works to develop Artificial intelligence while the sceptics say that while integrating the functions of Brain and AI, it is crucial to discern nature with precision. David Eagleman, in his book ‘Brain’, claims that a lot of what we see around is not even the whole picture; it is a mere description that Brain paints for us. A simple task as perception is not clearly defined yet. We still have the entire sea of discoveries to be made when it comes to neuroscience.

The other concern with Neuralink is the possible hacking of Neural networks. Though Neuralink technology is heavily dependent on Bluetooth which is supposed to be secure, there are threats from the tech like the Trojan Virus. The implications of hacking are beyond terrible and sound like an evil hacker-robot-zombie apocalypse depicted in sci-fi movies.

Another aspect of Neuralink which needs to be looked into is the classic social divide of haves and have nots. The surgery, although portrayed something as simple as a LASIK surgery, may not be affordable for everyone in the society. Are we looking at a new kind of discrimination in future? Is it even ethical and feasible to put a chip inside the brains of the entire human race? Every question leads to a new question.

It is an alien concept and thus, a scary one. It can help us learn a lot about the brain itself but will have huge repercussions. Figuring out the answers to the simple yet significant problems should probably be the next step for the Neuralink team.

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