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The Daily Triptych253 / 365

10 SEP 2026

Day 253

The seeing eye is the organ of tradition.

E. H. Gombrich · Art and Illusion
A nude woman rises from dark waves, one arm lifted above her head, painted in oil with naturalistic flesh tones against a shadowed expanse of water.

I · THE OBJECT · BRITISH MUSEUM

The Woman in the Waves

France · 1868 · Oil on canvas

In 1868 Gustave Courbet painted a woman half-risen from dark water, her flesh observed without myth or polish. The canvas is small, frank, and still slightly unsettling.

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II · THE IDEA · ARTIFICIAL INTELLIGENCE

Temporal Difference Learning Theory

RL · Non-stationarity and variance · Model-based worst-case; variational variance

Value updates that chase other estimates face a double problem: non-stationary targets and noisy variance. How those are modelled changes whether learning settles or drifts.

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Written before source checking was enforced · facts in this lesson are unverified

Oil portrait of a woman who looks straight out of the canvas, set on a wide horizontal field rather than a tall, narrow one.

III · THE WORK · ART HISTORY

Portrait of an Unknown Woman

Ivan Kramskoi · 1883 · Oil on canvas

In 1883 Ivan Kramskoi painted a woman whose identity was never recorded. First viewers saw insolence; later ones saw composure. The canvas still will not decide between them.

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