"As diversity progress in Silicon Valley stalls, advocates call for a new approach," the L.A. Times' Tracey Lien writes from San Francisco.

The big picture: "[W]hen companies pay money or lip service to diversity initiatives but don’t track whether those initiatives work, people start to feel like their time is being wasted ... Attrition of women remains high. And the number of black and Latino tech workers has by some counts actually declined."

By the numbers:

• "When some of Silicon Valley’s biggest names release annual employee demographic data, the numbers tend to budge, at most, by just one or two percentage points."
• "At Apple, underrepresented minorities rose from 22% of the workforce in 2016 to 23% in 2017. The percentage of female workers remained stagnant at 32%."
• "At Facebook, Latino staffers increased from 4% of the workforce in 2016 to 5% in 2017, while black employees moved from 2% to 3%."