From the article: 1/10 PM's to Engineers and 500 engineers = 50 PM's. That's not an entirely small amount for Facebook since they don't have a zillion differen

From the article: 1/10 PM's to Engineers and 500 engineers = 50 PM's. That's not an entirely small amount for Facebook since they don't have a zillion different products and features that need to be owned, like a company like Microsoft or Google.