math
magic hexagon
Markoff numbers
factorization server
Szilassi polyhedron
quadray coordinates
magic
a card trick
me
who
where
contact
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music
Frank Zappa
Jerry Goldsmith
misc
quotes
road signs
audio clips
bicycle wheel
bicycle shifter
optical illusion
Tehachapi loop
A. H. Clough poem
I never send spam
everything else
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