Lack of diversity is a problem on Silicon Valley boards

Minorities and women make up a smaller percentage of the various boards of directors for tech companies such as Amazon, Facebook, and Twitter.

Over the weekend, Twitter CEO Dick Costolo was pummeled after his company’s public filing exposed the makeup of the board of directors seated atop his $20 billion real-time empire: All white and all male.

Except for Costolo’s lame joke dismissing one critic—pundit Vivek Wadhwa—as “the Carrot Top of academic sources,” the skirmish played out like every other round of Monoculture Mad Libs: Name of hot tech company verb act of exclusion.