Generator
A shell section at W = 2.40, D = 0.42
W·D = 1.01, so the whorls are free of each other — an evolute shell, like a ram's horn or a planispiral ammonite. Both are things animals grow.
Drawn at its defaults, in shells and growth.
It carries a slider over Wp, so the claim in its caption strip is
restated at every stop rather than at one.
It takes no options at all, so every essay calling it gets this exact drawing.
Called by 11 essays
the blast radius of changing it
Shells and growth