Letter (Astounding, September 1938): Crows Can Visualize Up to Four—and That's Man's Limit of Visualization. But Man Can Count—Whereby He Excels the Crow.

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Overview:

Title: Letter (Astounding, September 1938): Crows Can Visualize Up to Four—and That's Man's Limit of Visualization. But Man Can Count—Whereby He Excels the Crow.
Author: James Blish
Year: 1938
Type: Essays
Series: Letters: James Blish

Variant Titles:

1938. Letter (Astounding, September 1938): Crows Can Visualize Up to Four—and That's Man's Limit of Visualization. But Man Can Count—Whereby He Excels the Crow.

This text has been adapted from the Letter (Astounding, September 1938): Crows Can Visualize Up to Four—and That's Man's Limit of Visualization. But Man Can Count—Whereby He Excels the Crow. entry at the Internet Speculative Fiction Database and is available under a Creative Commons License. The ISFDB does not endorse or sponsor this use.