People & society
Facebook is responsible for spreading false information. What does it say about its design? Is it rather user-driven, or revenue-driven?
Even the best idea with best tech solution is worthless, without good business model. It is common mistake designers/founders/(fill-other-role) make, when they overlook the importance of money.
There are designers who are obsessed with using methods. But as in life, when one focus too much on one aspect, looses touch with other things.