Archive
Justified True Belief
It has long seemed to me that the oft cited definition of knowledge (and it harks back at least as far as Aristotle I think, and thus has pedigree) as “justified true belief” is a problem. The concepts of “truth” and “belief” do not sit happily in the same sentence. Even the most modest respect for logic would suggest that “belief” as an idea hinges crucially on the notion that in spite of a lack of evidence, “such and such” is nonetheless the case. Suggesting then that “truth” – a statement of what indeed is the case – can be justified on the basis of belief does involve some sort of mental flip which redefines belief itself. Surely it won’t do. Neither will provenance nor longevity make it so.
Memory History Reality
From Ralph Ellison’s essay on Minton’s Playhouse, 1958:
[Of] those who came to Minton’s… no one retained more than a fragment of its happening. Afterward the very effort to put the fragments together transformed them – so that in place of true memory they now summon to mind pieces of legend. They retell the stories as they have been told and written, glamorized, inflated, made neat and smooth, with all incomprehensible details vanished along with most of the wonder. (quoted by DeVeaux, S. in The Birth of Bebop, Univ of California 1997.)
Which is a useful description of how the process of recalling and retelling risks draining the very life out of the events we seek to capture. This is a fundamental limitation of any method we might devise for describing or relaying objectivity. Dealing in objectivity becomes elusive and awkward.
Taking Risk Seriously
A friend, Stephen Jennings, has always had a great knack for expressing tough ideas very succinctly. Here he is on risk – very pithy, apparently obvious, but frequently ignored here is one of his summaries of risk:
If you want to do risky things, you have to accept that things will go wrong. You can’t say you’ll take the good times and have a lot of success then be resentful when things don’t go well.”
11 Jan 2022
Thought starter
The famed biologist E.O. Wilson recently died aged 92. Amongst the Twitter posts noting this I read this quote of his: “The love of complexity without reductionism makes art; the love of complexity with reductionism makes science.”
A first reaction was mental rehearsal of all the arguments purporting to demonstrate that reductionism involves simplistic analysis of complexity such that essential elements of whatever is in question are either missed altogether, or understated, or distorted or become, at least, severely underrepresented. The opposite end of the argument typically sees art as involving romantic waffle bearing little resemblance to empirical observation, sloppy concepts, unmeasured dimensions, unworkable descriptions, and at least unacceptably loose thinking. The midpoint might be thought of as involving all the cowardice of no mans land with an accompanying lack of progress in any direction.
A bit of thought suggests that the statement is worth digging around in for a bit – not least because Wilson was one of the worlds serious thinkers and astute observers, his statement involves no judgment and is likely to have been made after some form of due consideration. Surely there are insights here?
List of Initial Planks
Here is the first list of planks or building blocks for the discussion of explanations and explanatory models. It is likely incomplete but that is not fatal:
- All explanations (and models – a term I subsume within “explanation”) are stories;
- Concepts such as “reality”, “actual”, “real”, “truth”, “true”, “fact” or “exists” are of no relevance as generic undefined concepts;
- All stories are provisional and are expected to change, be updated, altered and added to (or subtracted from);
- The measure of a “good story” versus a “bad story” is whether or not and to what extent it fulfils its purpose;
- The correspondence of a story to anything else – most noticeably to “objective reality” is irrelevant, likely unmeasurable and often unhelpful; and,
- A purpose is a specified intent of some kind and may have a short or long life, may be broad or narrow and may be familiar or unfamiliar and much else.
Given that some sort of beginning is required, this will start things moving.
Some other points will be set out to amplify the above. These will also be incomplete, but their purpose is to lend some flesh to the bare bones laid out above.
Why reform is demanding
As NZ struggles to reform the RMA, some idea of the impact of NIMBY problems as well as the catyclismic events required to nullify them can gained from this:
The London Blitz and the NIMBYs
by Tyler Cowen December 11, 2021 at 2:16 pm in
NIMBYs can be so bad that they make the London Blitz look good:
We exploit locally exogenous variation from the Blitz bombings to quantify the effect of redevelopment frictions and identify agglomeration economies at a micro-geographic scale. Employing rich location and office rental transaction data, we estimate reduced-form analyses and a spatial general equilibrium model. Our analyses demonstrate that more heavily bombed areas exhibit taller buildings today, and that agglomeration elasticities in London are large, approaching 0.2. Counterfactual simulations show that if the Blitz had not occurred, the concomitant reduction in agglomeration economies arising from the loss of higher-density redevelopment would cause London’s present-day gross domestic product to drop by some 10% (or £50 billion).
Here is the full paper by Gerard H Dericks and Hans R A Koster, via tekl.
Volcanic Analysis
Matt Levine at Bloomberg is likely one of the best analysts Wall Street has. He is shrewd, unpretentious, on the money and his written output – daily – would easily match Tyler Cowan’s reading speed. He has a great description of El Salvador’s move to adopt bitcoin as its monopoly currency. It is “millennial capture” thumbnailed into a couple of thoughts and expressed succinctly….
“[T]his is an example of market segmentation by standing in front of a PowerPoint presentation at a Bitcoin party wearing a backwards baseball cap. This is market segmentation by slapping a cool name — “Volcano Bond” — on a bond that is strictly worse than a readily available alternative. This is market segmentation by combining a normal thing with (1) crypto and (2) a huge markup, and then marketing it to crypto people who want to pay the huge markup not to buy crypto (they can just buy crypto!) but to buy into a crypto adventure.”
While there is little doubt that digital currency will expand and perhaps clear the stage of other dangerous political instruments while shutting down the “Fed Watcher” industry to all our benefit…. There are likely to be stumbles along the way. Matt’s eyes are a great means for watching this. See Matt Levine – Bloomberg
No Full Substitutes
“You can’t replace reading with other sources of information like videos, because you need to read in order to write well, and you need to write in order to think well.”
— Paul Graham
One reason is that:
Writing is often the process by which you realize that you do not understand what you are talking about.
Unfortunately and an Eternal Curse
“a salutary lesson [is] that good economics often makes for poor politics. Especially when there is a trust deficit between the key stakeholders and the government; and the politics is partisan and non-consultative.” BBC 20-11-2021
Eye2theLongRun 