''Tau solves the problems from the Tower of Babel to the Tower of Basel''
- an early 21st century yet undisclosable author
Okay, dearest friends, lets pull sleeves up and start with it. Vivisection of the Scriptures? Revelation by transfiguration? Pulling the Tau from the ocean of wisdom out on the dry no-Maths-land? I hope not.
The quote above on first glance sounds so pompously biblical, but in fact it denotes the crystal clear and simple practical and mundane rationale of Tau which I already tried to approach from few angles , .
It is about the hierarchic bottleneck of one unscaling ,  Humanity. Take the hint about leveling of the Towers as a poetic symbol of elimination of the social 'verticality' -- the hierarchies as a so far necessary evil to compensate certain innate neurological limitations , , ,  -- and reforming  the network we are embedded into and usually call mankind or society or economy or world into an as geodesic as possibly possible one . For the sake of its own functional programmatic optimization .
Notice that towers leveling is not by demolition, but by uplifting the overall landscape level to and above the tower tops, turning them into deep roots or support pylons of asymptotically geodesic society .
Apparently, mentioning the Gate of God  denotes the unmixing  of languages & mentioning the apex global fiat settlement institution  - the excelling of the current fiat procrustics  i.e. the economy aspect.
That is: TML to Agoras . The first and last of the totally six identified aspects or steps of the social choice  as addressed by what we call Tau.
''our six steps of language, knowledge, discussion, collaboration, choice, and knowledge economy''
These aspects deserve of course separate zoom-in exegetic chapters and they'll definitely get it. I promise. And not only they.
Any exegesis of Tau unavoidably must start with scroll back and tracking down of the full history of the development so far. As a zoom out to see the full picture and to identify the dominant features of the landscape relief.
You, I reckon, already noticed this retrodictive inclination of mine , that in my mind the notion of ''Timeline of Development'' can not be by any logic just a handful of milestone promises thrown into the future, but it is a must to account for the up to now trajectory, too! No future without past.
It all started as Zennet , continued as Tau-chains  and 'turned' into aka 'newtau' , , , .
Wait! A New Tau?
Excuse me, Ohad, but I personally do not buy that and I said it many times. There ain't old and new Tau. The situation is much more straightforward and grokkable . Here it is:
Lotsa guts, balls, butt, brains or whatever human offal... is required for each of us to admit a mistake made in our everyday life. Generally quite a strength is needed to even look ourselves into the mirror...
It takes a whole Ohad though, to keep all oneself's work totally public and transparent even on the full and unedited live record of the infil  into entire branch of mathematics  and then throwing it all away as untauful. We witnessed that reported in real time!
Did this change the ends? No. But sorted out the means to an end.
Was it a 'mistake'? In no case. It was duly delivered R&D effort.
Was oldtau looking promising on first glance? Yes, of course it did.
Did it survive the Ohad's R&D 'crash-testing'? No, it didn't.
Was it a ''juice worth the sqweeze''? It was.
Was it a job well done? Absolutely.
The oldtau materials are for me legacy jewels. Like those dinosaur bugs trapped into blobs of amber .
Development is a process, not just results shipping. Related like cooking and serving.
Studying the zoom-out dev map we observe these few major landmarks:
The Zennet province is all right. Its gently rolling hills gradually merge into the Tau lands proper with the inevitable realization that a 'world supercomputer' can not be a Tauless thing. Zennet lives in Tau with .:
''... having a decentralized search engine requires Zennet-like capabilities, the ability to fairly rent (and rent-out) computational resources, under acceptable risk in the user's terms (as a function of cost). Our knowledge market will surely require such capabilities, and is therefore one of the three main ingredients of Agoras... hardware rent market...''
We move over through the oldtau wastelands  where the burnt ruins of MLTT  lie scattered - rough oldtau location-on-the-map indicator is the fall of 2015 with
''Tau as a Generalized Blockchain'' - posted Oct 17, 2015, 6:33 AM [updated Oct 17, 2015, 6:49 AM]
and then we reach the fertile gardens of newtau  in the fall of 2017:
''The New Tau'' - posted Dec 31, 2017, 12:27 AM [updated Dec 31, 2017, 12:28 AM]
Hmm. Apparently we crossed a watershed. Which relief feature it was? - The ridge  of:
''Tau and the Crisis of Truth'' - posted Sep 10, 2016, 8:25 PM [updated Sep 10, 2016, 8:28 PM]
Tau sorts out the Towers. I hope that the synopsis in this short chapter of Exegesis helped to sort out Tau dev in time as a navigation lookup tool.
Software is nothing but states of hardware. There is that intimate deep, not yet codified into a neat compact of logic, connection between Gödel , Heisenberg  and Laws of thermodynamics .
Tau keeps us off these traps.
I do not dare to state that someday we won't have the command on infinities and to play with them with the ease  of
''... a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.''
In fact, quite the opposite I'd rather take it as inevitability someday we to conquer the Cantor  expanses and to venture far even beyond that. To transcale  the transfinite. Like Hilbert  said it.:
''Aus dem Paradies, das Cantor uns geschaffen, soll uns niemand vertreiben können. (From the paradise, that Cantor created for us, no-one can expel us.)''
But it takes ... finitary vehicles of DECIDABILITY to conquer the transfinitary outer spaces. Because, in order to dear to dream to tame the infinities, we must first harness and get full command of finities.
Including of ourselves. Tau is ''understanding each other''. Without Tau we are ... others to ourselves.
Imperare sibi maximum imperium est.
Bizarre headline, isn't it? Sorry. It just ... coalesced spontaneously as ... a protein folding . Lets try to decompress it. Compression is comprehension . Decompression is experience. Firstly, I'll throw herein three bold statements - big separate mega-topics which I'll soon revisit by furnishing them with or backing them by their due Behest.io  full-fledged articles.:
1. The World is Fiat
I tend to generalize the term of fiat , to not only currency  but to all the Sollen  approach to transactors. In my vocabulary Fiat as an umbrella, general term for all social interaction which requires external enforcement, i.e. all what's not trustless or self-enforcing like morals  or blockchain . The whole system of monetized coercion. Or reciprocal - coercion backed fiat monetization . (Note: monetization of coercion vs coercion of monetization are not related by an OR  operator, but they are typical chicken-and-egg problem  - even the smallest children know that eggs precede chicks!) All what requires trust ...
2. Trust is Force
''You trust 'em only as much as you could make 'em to.''
Coercion or force or violence ... itself, IS currency per se - the primordial, the deeply preceding the emergence of Mankind one, and who manages to rigorize  it quantitatively will get and give us a TOE  unification of ecology and economics, i.e. instantly Nobel prizes! Not sure in which combination of fields. Simultaneously.
3. Money is Mnemonics
E.g. money in all forms is ... accountancy. Or book-keeping. Ledgers. Logs. Databases. Memory. They are even cognates  those - money and memory. Ancient truism.
It comes as necessity from the problem of simultaneity of transactions between autonomous agents, with other words - between automata , or self-thinkers, or those who are black-boxes  to each other. Regardless of whether the economy is mere barter, or it have uplifted one or more of its items to transactor/currency status.
Apparent feature of all accountancy systems is that they possess cardinality  of entries.
Up to now we know single-entry , double-entry  and tripple-entry  book-keeping system.
Not sure if a 'system' where everybody perceives, remembers and acts upon an isolated unshared 'ledger' of records on what's owed, contained only in its head - and runs it the way they could and want ... - counts for zero-entry book-keeping. Pun intended.
Can't wrap my head around negative or fractional numbers of book-keeping entries, nor I know what's the maximum practical and useful number of entries to juggle with. I expect Tau to bring together the, without any shadow of doubt, already available but dispersed across space and time bits and pieces of knowledge on accountancy entries cardinality into a general theory of transaction logging. It is necessary because, you know - an item is money (mnemonic  facility) ... transactor is accelerator , and general theory will give us a tool to know which monetary mechanism design  is the most powerful wealth growth booster.
Satoshi's blockchain is the first and only instance of successful implementation of the triple-entry book-keeping , so far, where credit and debit records and receipt are coined  into one. Self-enforcing log-book is as much (or not more) magical, or deus ex machina  solution then a horseless carriage vs a 'legacy' cart.
The blockchain catered total value is expectedly impressive grower itself. It took only 7-8 years to Bitcoin (and its imitations) to reach ~1% of what took 7-8 THOUSANDS of years to Gold  to get.
BUT, we still live in a predominantly Fiat, double-entry book-keeping world:
Visualize the modern world as a forest of centralized 2-entry ledgers:
From the several hundreds of tree stems - the Central Banks , though the thousands and thousands of commercial banks - fractional reserve franchisees of the Central Banks, down to the individual humans and firms credit-debit records.
A vast centralized fractal of 2-entry ledgers of ledgers. Lined into one by the global meta-ledgers - provided by international institutions like BIS .
Important Note: ... which I must make here - Lots of crap talk we've heard about how Blockchain is against Fiat, how it will replace it, how it frees us from the illths of the ancient regime  . NOTHING like that! The truth is that, for now, we do not have even the slightest idea or hint about how we could decentralize or detrust interpersonal voluntary exchange! Geography and history, e.g. nature and culture are forces to reckon. The propaganda suggestion that fiat money is kinda fake, printed at a wish, valuable only because we all believe in them ... is one of biggest nonsense I've ever heard.
As in any forest, the tree size and power varies. And matters. USD is the Yggdrasil  of the meatspace  of the global fiat mainstream Swartzwald  ! (Just like BTC is in the cyberspace one. It is not occasional at all that both are so perfect systemic benchmark matches.) In the ocean of fiat, USD is a giant landmass, a Pangea which is nearly impossible to go around of. The force of 20 000 golf balls of Plutonium coupled with same number of office dustbins of LiD  . And 1000+ military bases scattered around the world. And comprehensive coverage of the sea routes to guarantee that the global trade goes by the books. And working supremacy of law system as an antidote of internal corruption decay of the system... Shall the USD survive the Blockchaincalypsis? Of course! Taxcoins  are always needed. The runaway crypto-fication of the fiat monetary systems only makes the due payments of geopolitical services more and more unescapable. And more and more precise and fairer. With higher resolution and lower lag.
Backed by force means that the the strongest force is the most trustful. Like all those currencies who belong to the hall of glory of the millennial monumental transactors.: Hellenic drachma  - survived so far as a currency name in the Gulf , Roman solidus , Spanish silver dollar , etc. ... used to be. Mainstreamers - for being backed by the biggest force. (Mentioning the Force, we simply can not go without a Star Wars quote , I'm afraid - the best and most inexorable thesaurus of cliches.)
Lets close now the three side notes of dictionary intro here, and go back to PROCRUSTICS:
First, yes, it is about that antiquity gangsta, the psychopathic dropout of the noble blacksmiths profession - Procrustes .:
''who attacked people by stretching them or cutting off their legs, so as to force them to fit the size of an iron bed.''
Secondly, the etymology turtledoves  who explained to us what Behest is , clarify that:
Don't look exactly like pigeons, do they?
Thirdly, Procrustics by the great philosopher Stanislaw Lem . This is from Wikipedia:
''In 1959 science fiction novel Eden by Stanislaw Lem, Procrustics is the name of a fictitious information-theory based social engineering discipline of molding groups within a society and ultimately a society as a whole to behave as designed by secretive hidden rulers, to create a hideous form of social control in which the very existence of the governing powers is denied and each individual appears to themselves to be free yet are being manipulated and controlled. One example described in the novel is "concentration camps" without any guards which are designed so that the prisoners stay inside apparently on their "free" will.''
Last but not least, it is no surprise that this so much meaning laden word entered the vast fields of mathematics, too - , , , to denote so important concepts. Procrustean transformations:
''Hence, it may change the size, but not the shape of an ... object.''
I think this is enough of explanation to tie it up into:
The Fiat is procrustic because it is ripe to be transcaled!
Fiat is saturated. It can not grow the old ways any more. It is really dearer and dearer to be grown. It reached its internal limits.
Fiat (as global fractal integration of all double-entry accountancy books) is a narrative.
Fiat is procrustic, because being unaffordable thing to cover it all: it omits, it cuts off, it keeps out, excludes, discriminates, sequesters ...
As a narrative it tells a story of wealth, but leaves out so vast unsung, though present, riches.
The global fiat bards memory is too weak to memorize it all and they are not clever enough to distinguish the true from false entries ...
The fiat Yggdrasil Norns  fingers are weak to handle all threads and to manage to interweave them all into the meta-ledger ...
Giant mass of economic data left lying in waste, unused. And that's REALLY bad cause the data about the system state is the fuel for its own self-reinforcing positive feedback loop . Yeah, data as the new oil , but literally.
The estimates are that as much as up to 80% of all economic information stays off the record .
Cf.: Hernando de Soto Polar , who estimated that.:
''The existence of such massive exclusion generates two parallel economies, legal and extra legal. An elite minority enjoys the economic benefits of the law and globalization, while the majority of entrepreneurs are stuck in poverty, where their assets—adding up to more than US$10 trillion worldwide—languish as dead capital in the shadows of the law.''
in his 2000, ''The Mystery of Capital: Why Capitalism Triumphs in the West and Fails Everywhere Else'' 
Cf.: aka Bazaaristan .:
''Across the globe, 1.8 billion people -- a quarter of the world's population -- work off the books each day. They are paid in cash for the goods they sell and the services they provide, and due to their ubiquity, there's a word for these merchants in nearly every language. As Robert Neuwirth reports, in French colonies, they're known as débrouillards -- self-starters, entrepreneurs, all outside the bureaucratic system. They might be vendors selling revolutionary goods in Egypt's Tahrir Square, Nigerians selling mobile phones, or the guy down the street hawking flowers on the corner. Whoever they are, they work in the world's fastest-growing economy: System D. As Neuwirth writes, System D, slang for "l'economie de la débrouillardise," is the crucial blackmarket, providing opportunities where the regulated global economy has failed. Its value is estimated at roughly $10 trillion, meaning, as Neuwirth points out, that, "If System D were an independent nation, united in a single political structure -- call it the the United Street Sellers Republic (USSR) or, perhaps, Bazaaristan -- it would be an economic superpower, the second largest economy in the world." The Organization for Economic Co-operation and Development (OECD) predicts that two-thirds of the world's workers will be employed in System D as soon as 2020.''
Cf.: the world unbanked population phenomenon 
''Two billion people worldwide do not have a bank account or access to a financial institution via a mobile phone, or any other device.''
The ancient worldmap picture up at the bizarre headline, denotes exactly this 'Here Be Dragons' situation of the Blockchain-unboosted yet Fiat finance.
All these examples demonstrate not a conspiracy of a kind, but mere and obvious fiat unscaling symptomatics.
Probably in the old centralized way, for a double-entry book-keeping system in order to check, record and run all facts of relevant economic information, would have to consume more than what the economy makes as a whole! :)
This inevitably crosses with the important topics of the network scaling effects - for merely linking all the dots means automatically n^2 bigger economy . Without to add anything new, but by just noticing and accounting of the existing wealth.
We have probably dozens of TIMES bigger economy than we realize! Tantalus suffering .
On the comparative costs of the accounting systems there are three studies, , ,  which I particularly value, and which put into a neat perspective together with the network scaling effects  are definitely subject of separate near future blog posts of mine.
Now scroll-up back to the ''Important note'' above, please.
Blockchain is not the Fiat killer. It is its Transcaler  !!
And Tauchain being - together with so many other things - the generalization and the generalizer of all possible blockchains in particular and all possible accountancies in general - is the transcaler of the transcalers.
And as effect - the ultimate economy (incl. economy governance ) Accelerator .
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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.