From today’s NYTimes.

FOR barristers in 18th-century London, it was shoulder-grazing wigs. For the Mad men of 1950s New York, it was briefcases and fedoras. For the glass-ceiling-shattering women of the 1980s, it was shoulder pads.

And for today’s tech entrepreneurs in high-flying Silicon Valley, it is flamboyantly colored, audaciously patterned socks.

In a land where the uniform — jeans, hoodies and flip-flops — is purposefully nonchalant, and where no one would be caught dead in a tie, wearing flashy socks is more than an expression of your personality. It signals that you are part of the in crowd. It’s like a secret handshake for those who have arrived, and for those who want to.

“I have been in meetings where people look down and notice my socks, and there is this universal sign, almost like a gang sign, where they nod and pull up their pant leg a little to show off their socks,” said Hunter Walk, 38, a director of product management at YouTube, whose favorite pair is yellow, aqua and orange striped.

Note: the New York Times is serious newspaper.