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From the pattern:

Mr. Spock wore a wool hat to hide his ears in the 1967 Star Trek episode “City on the Edge of Forever” and of course the tricorder is a must-have for any Enterprise crew member on an exploratory mission!

The name also describes the cords on this hat, which fan downward in groups of three and end in faux tassels. I was thinking of a young man’s preferences when making this hat, but it would make a nice woman’s hat too. The color pattern is called “Two Color Twisted Ladder” in Barbara G. Walker’s “Treasury of Knitting Patterns” (first volume). It uses the two-color technique of slipped stitch knitting, adding a nifty twist to the slipped stitches to simulate a cable.