> Zuckerberg said on Wednesday that those changes have already reduced time spent on Facebook by roughly 50 million hours a day. Or, to put this another way, p

> Zuckerberg said on Wednesday that those changes have already reduced time spent on Facebook by roughly 50 million hours a day. Or, to put this another way, people have saved 50 million hours that they formerly spent scrolling past stupid videos and memes they'd already seen on Reddit.