Size matters. Some people object that it does not matter, but has meaning. But meaning always matters, so it is the same.
The bigger problems one solves, the bigger the gains. Big problems require big solutions. We live in a big universe and our very survival is to deal with bigger and bigger problems, which require bigger and bigger solutions to cope.
But nevertheless to build big is hard so we naturally prefer to create small things which can grow. Small from point of view both of understandable and affordable to build. So best fit are small solutions, cheap and easy to make which scale out or unfold or unleash into big means to address big problems. Scaling is everything.
Scaling. Scalable! Scalability !!
The root-word 'scale' possesses marvelous riches of meaning in English language  with lots of poetics inside.:
 snake skin epidermals - wisdom, memory, protection, rejuvenation, regeneration, eternity...
hen to pan (ἓν τὸ πᾶν), "the all is one"
 warrior armour - security, defense, power, strength.
 weighting scales - device to measure mass, unit, measure, account.
all very Blockchainy wording without any shadow of doubt.
The scalability issues could be grokked  with the following anecdote:
Bunch of workers on a construction site and a huge log. The onsite manager commands a few of them to lift and move it. They try and object ''Too heavy!''. The manager adds more and more workers, until they shout back again: ''Too short!''.
A few real examples, the first two - bad and the last three excellent:
[a] I won't name this 'crypto' just will say it is named after a mythical element of the universe, according to the prescientific gnostic  imaginations. It's core 'value proposition is to shovel meaningful computation into a thread of computation which very value proposition is to be as random, meaningless and unidirectional (hard to do, easy to prove) as possibly possible - the blockchain. The theoretically most expensive form of computation. Visualize: cars and airplanes made of gold and diamonds burning most expensive perfumes. Or mass production of electricity by raising trillions of cats and hiring trillions of people to pet them with grid of pure gold wires to discharge and collect the electrostatics. If they have chosen the original Satoshi blockchain  for their 'experiments' - where the futility of such attempt would become instantly clear and would die out outright due to impending unbearable cost - will of course be more fair way to do, and would've spared dozens of billions of dollars to the Mankind, but logically they preferred a 'controlled' blockchain of their own. In a sense that the guys with vested interest into it have the power to hand-drive, stop, restart and vivisect it. The only use of this 'blockchain supercomputer' is ... tokenomics by Layering. Why it was at all necessary for a blockchain advertised as so good as to do all the general computation, to be made so hairy and bushy with layered tokens??
[b] Another trio of chaps, won't mention names again, were really at awe with Satoshi's creation, so much that they not just liked, but wanted it and decided to have it. For themselves. All of it. And rebelled and forked out and provided 'scaling' errrmm ... uhhh... solution. By increasing the blocksize. Something which Satoshi meditated on, extensively discussed with his disciples and not occasionally decided to put breaks on.  Very recently the crypto news headlines said that the blocksize increase solution providers are eyeing ... Layering. Which they furiously were advocating that blocksize increase makes unnecessary. Cause it is the solution, isn't it? Or maybe it just was. And is not anymore? Well, I'd say that all the aka 'alts'  - to provide a rejuvenated clone of Bitcoin tweeked here and there to provide momentary ease of difficulty and transaction fees - suffer from one and a same problem - traveling back in time does not tell you the future.
[c] Lets jump half a century back in time. It is 1960es. The very making of internet. Computers are already here and scaled up in numbers so their networking to become a problem/juice worth the solution/squeeze. The birth of TCP/IP  and the report of the very makers of it. Of the solution for the network scaling. Enjoy the ancient wisdom:
Initially, the TCP managed both datagram transmissions and routing, but as the protocol grew, other researchers recommended a division of functionality into protocol layers. Advocates included Johnatan Postel of the University of Southern California's Information Sciences Institute, who edited the Request for Comments (RFCs), the technical and strategic document series that has both documented and catalyzed Internet development. Postel stated, "We are screwing up in our design of Internet protocols by violating the principle of layering." Encapsulation of different mechanisms was intended to create an environment where the upper layers could access only what was needed from the lower layers. A monolithic design would be inflexible and lead to scalability issues. The Transmission Control Program was split into two distinct protocols, the Transmission Control Protocol and the Internet Protocol.
The layering made the Internet as we know it. By the simple trick of just one node needed to permit another. Unstoppable inclusivity!
[d] The Mastercoin / Omni Layer :
«A common analogy that is used to describe the relation of the Omni Layer to bitcoin is that of HTTP to TCP/IP: HTTP, like the Omni Layer, is the application layer to the more fundamental transport and internet layer of TCP/IP, like bitcoin».
[e] The Lightning network (LN) :
The Lightning Network is a "second layer" payment protocol that operates on top of a blockchain (most commonly Bitcoin).
Satoshi spoke on 'payment' channels in his masterpiece. Foreseeing the way to scale.
An estimate of the power of LN layering .:
''The bitcoin devs accept that eventually larger block sizes will be needed. The current transaction rate isn't going to cut it if people all over the world actually start using bitcoin daily. They estimate that eventually, if everyone in the world uses bitcoin and makes 2 transactions a day, but uses the lightning network, a 133mb blocksize will be needed. Without the lightning network, something like a 200gb (GIGABYTE) size PER BLOCK would be needed to accommodate that much usage.''
Layering upscales it with orders of magnitude of higher efficiency.
If Bitcoin is the 'first layer' and Omni and Lightning are 'second layer', I see which one is the 'Zeroth Layer' and also foresee  the inevitability of the merger or 'Amalgamation' of all second layers over all blockchains, so the user will be able to transact everything into anything to anybody, without to know or care which chain is in use ... I have special nicknames for these and will go back to these topics in series of future posts.
Enough of examples I reckon.
The Postel's sacred Principle of Layering comes from the implementation levels paradigm.
or Abstraction layering :
''separations of concerns to facilitate interoperability and platform independence''
With other words - delegate the task to that layer of the system which does the particular job best. We can generalize this into The Scaling Commandment. Only one enough:
''Thou shalt not jam it all into a single layer!''
The Layer Cake architecture is literally ubiquitous across the Universe.: biology, semantics, informatics ...
It seems that it is if not the only, at least THE way to scale.
Maybe, someday, we the Humanity, upscaled by Tauchain will discover more powerful than Layering ways to Scale, but it is all we have for now.
Scaling is a problem. Scaling must be scalable, too.
Metascale from here to Eternity.
Hans Moravec  is the patriarch of robotics . The real one, not the Sci-Fi father. Asimov was just the prophet in this scheme of things.
Moravec to Kurzweil is what's Bitcoin to Ethereum and Satoshi to Vitalik.
Sorry, for the rough joke. No offence, Ray! Back in the earler 2000s I bought your books too .
In my humble opinion - aside from the ''reality intratextualization''  concept - the other wisdom jewel of Moravec's - fruit of a life devoted to robotics - is the Moravec's Paradox .
Explained in his own words:
Encoded in the large, highly evolved sensory and motor portions of the human brain is a billion years of experience about the nature of the world and how to survive in it. The deliberate process we call reasoning is, I believe, the thinnest veneer of human thought, effective only because it is supported by this much older and much more powerful, though usually unconscious, sensorimotor knowledge. We are all prodigious olympians in perceptual and motor areas, so good that we make the difficult look easy. Abstract thought, though, is a new trick, perhaps less than 100 thousand years old. We have not yet mastered it. It is not all that intrinsically difficult; it just seems so when we do it.
or with Steven Pinker's :
The main lesson of thirty-five years of AI research is that the hard problems are easy and the easy problems are hard. The mental abilities of a four-year-old that we take for granted – recognizing a face, lifting a pencil, walking across a room, answering a question – in fact solve some of the hardest engineering problems ever conceived...
As I noted in a previous related post of mine , a system's value dynamics is all about how it scales. Preferable of course are systems which make more good to go around than less. Respectively, to come around.
Humanity is a network, and its scaling is stumbled by our innate attentional resources limitations.
Human social interaction is a skill and we naturally have only as much of it.
For now, in the good old hierarchic way , we can't deny that we scale satisfactory well (as compared, lets say, to our DNA-blockchain-fork-out first cousins the chimps ) for collaborating efficiently on successful execution of trivial tasks like empire building or colonization of the Galaxy.
But not all problems we encounter are simple. In fact most problems are more complex than we are capable to grok and master in the hierarchic collaboration mode, which quickly slams into the Shannon's 'brick wall' 
Ohad Asor's Tau  is intended to be humanity upscaler . This project is the first and only one I've discovered so far where the so obvious (after you know it) problem is even identified, stated and addressed.
This means uplifting the individual humans too, because we are literally AIs serially manufactured by our society (cf. feral children ).
It feels easy for us to attend, to remember, to forget, to think, to talk, to work together - so it is extremely Moravec-hard!
Tau is unique approach towards the Moravec-hardness of these problems in the realization that we do not need at all to waste time and resources to mimic nature and copy ourselves and to create high tech homunculi .
The 'problem' is the solution. Don't 'solve' it - just god damn use it!
It is the people who ask questions, upload statements, express tastes and do all that qualia  crap humans usually do.
The machine distills the semantic essence of all the shared thought flow, treats it as wishes specs, and automatically converts into executable code, incl. its own code self-amendment.
As Moravec found out few decades ago  :
The 1,500 cubic centimeter human brain is about 100,000 times as large as the retina, suggesting that matching overall human behavior will take about 100 million MIPS of computer power.
When these processing brain things are really put together in numbers the result is unprecedented power. An unstoppable force. A glimpse into it by Ohad :
It turns out that under certain assumptions we can reach truly efficiently scaling discussions and information flow, where 10,000 people are actually 100 times more effective than 100 people, in terms of collaborative decision making and collaborative theory formation. But for this we'll need the aid of machines, and we'll also need to help them to help us.
Without application of dehumanizing individual upgrades, without to be necessary to understand and reengineer the billions of years of evolutionary capital, but just harness it and use it. (Scaling itself must be scalable, too, ah?)
In my personal up to date limited understanding it seems that it is indeed the HUMANITY what's to be known as the Tau's 'Zennet Supercomputer', and the machines are the ... collab amplifier media, the 'internet' of it. (Ohad, correct me if I'm wrong, please.)
Like laser configurations of minds.
With performance stronger than thought.
NOTE: I have the honor to be in the Tau Team, but all reflections in this post are personally my opinion.
Logo by CapitanArt
Enlaces / Links
Logo by CapitanArt
Archivos / Archives
Suggested readings to better understand the Tau ecosystem, Tau Meta Language, Tau-Chain and Agoras, and collaborate in the development of the project.
Lecturas sugeridas para entender mejor el ecosistema Tau, Tau Meta Lenguaje, Tau-Chain y Agoras, y colaborar en el desarrollo del proyecto.