What I don't understand is why people think FB lying about metrics helps them. Aren't these people keeping track of sales? Those should show that if FB was get

What I don't understand is why people think FB lying about metrics helps them. Aren't these people keeping track of sales? Those should show that if FB was getting all these views they aren't worth much as their sales didn't go up. Course the clients might be running several campaigns at once and can't tell what is driving sales. If only they knew what half of advertising dollars worked!