Tom Veatch

Flames of inspiration often leave smoke signals behind.
From mine, these.


Logic, Math, Physics, Biology

On Human Evolution

Tautology -> Evolution -> Language
Also, methodology, whereby evolutionary changes may be ordered.
Also, a conceptual archeology, from language back to the Big Bang, and beyond.
Also, notes on the evolution of language.

Foundations of Future AI

Towards a New Cognitive Science

Tea Lady

Tea Lady is a web app for testing if an assertion holds up statistically. Great, easy, accessible, quick, observational experiments by anybody. Tea Lady applies Fisher's Exact Test repeatedly as you do live data collection.

A predicate, for some category X, and some property Y, is the statement that X's are Y. That could include anything. The truth of it, though, empirically tested with the Tea Lady on-line tool. You watch and classify: Observe the X's and Not-X's that occur or come by, and record whether they are Y's or not Y's. Tea Lady keeps count and gives you a P-value or significance measure.

Science can be fun and easy!

Negative Dimensionality

Hilbert's axiomatization of geometry, full of redundancy, led me to a generalization which makes geometric dimensionality a characteristic that can be counted up (as in point to line to plane to space, etc.) and down (space to plane to line to point: etc.) Geometries, by intersecting, create lower-dimension geometries; for example two intersecting 2D planes create a 1D line. Geometries, by projecting, create higher-dimension geometries; for example, two 0D points project a 1D line.

But if there is no upper limit, perhaps there is also no lower limit. The idea that a geometry might have negative dimensionality seems absurd, considered within the assumptions of spatial thinking, yet it derives from the same less-redundant axiom set as the geometries we understand. Suggestions for intuition and use of this idea are also given.

Populating

On the growth -- and decline -- of species like pine trees, or humans.

An essay toward a parametric model of species success and failure. A clear thought experiment showing how it proceeds, what factors influence it, and how to aim for a soft landing as resource limitations start to squeeze. Relevant to us? I think so.

(Universal) Gravity is BS

An argument for Local, Quantum Gravity. Based on the winding problem in which galaxies remain spiralled or barred rather than a smoothly-blended coffee cup of stars, even after supposedly 20 rotations, I propose that gravitational attraction doesn't actually reach out forever, but only to a limited distance from each point of origin. Not only does this explain the mysterious maintenance of spiral galaxy arm coherence but it also explains the interaction of spiral arms with the galactic bar shape, and explains the process of formation of barred galaxies, and it predicts and explains systematic color variation within spiral galaxy arms (which are like tornadoes, spiralling around their centerlines, and detached gravitationally from the galactic center, according to this theory). Current alternative proposals in terms of dark matter and standing waves are demolished. Perhaps the merged projection of such local gravity quanta creates and constitutes space itself, thereby creating the expansion at and after the Big Bang.

(Im)Possible Worlds

Where I rant and rave against "possible worlds" being used where "concieveable worlds" is intended. But "conceiveable" does not mean (actually) "possible"! So wake up, logicians!

On the Origin of Life

Where I speculate on how a single lucky event keyed the the origin of life. Not two.

Some Water Waves

...A partial typology of water waves...

Water waves come in a small set of types, listed here. Discover the anti-causal wave, the Soliton, the horizontal sheet flow, and other curiosities. Then, try to explain them.


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Copyright © 2000-2021, Thomas C. Veatch. All rights reserved.
Modified: 12/20/2021