I did google, all I found were journalists making that claim, and no convincing data. See e.g. my comment here: https://news.ycombinator.com/item?id=18824502 ht

I did google, all I found were journalists making that claim, and no convincing data. See e.g. my comment here: https://news.ycombinator.com/item?id=18824502 https://news.ycombinator.com/item?id=18824502 - about one of the papers that's cited here to make this claim.