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Bullseye

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https://en.wikipedia.org/wiki/File:Pinna%27s_illusory_intertwining_effect.gif
Image: Wikimedia Commons

An optical illusion. These circles are concentric.

(Baingio Pinna and Richard L. Gregory, “Shifts of Edges and Deformations of Patterns,” Perception 31:12 [December 2002], 1503-1508.)

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lograh
7 days ago
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Bop Spotter

jwz
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lograh
49 days ago
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Saturday Morning Breakfast Cereal - Simple

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Click here to go see the bonus panel!

Hovertext:
Also the nice books give you fifty problems to establish understanding while the scary books give you two trick questions.


Today's News:
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lograh
167 days ago
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Related to the "two trick questions" hovertext: One of my Real Analysis texts included among the homework problems some that were unsolved questions in math. Another (Galois) text didn't bother with homework sections because all the chapters were mostly blank pages you were expected to fill in on your own. Good times.
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It’s A Feature

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It's A Feature

And more design.

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lograh
232 days ago
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Realities

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Realities

And more reality.

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lograh
442 days ago
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tax deductions

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https://www.oglaf.com/tax-deductions/

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lograh
443 days ago
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1 public comment
tante
443 days ago
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"Corporate responsibility" and "corporate values".
Berlin/Germany
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