How’s that for an optimistic title? What Daniel Kahneman actually says in his TED talk is “Happiness is not a useful word anymore.” Kahneman is considered the founder of behavioral economics (that’s the same field as the guy I often refer to as my braincrush, Dan Ariely).
From TED:
Using examples from vacations to colonoscopies, Nobel laureate and founder of behavioral economics Daniel Kahneman reveals how our “experiencing selves” and our “remembering selves” perceive happiness differently. This new insight has profound implications for economics, public policy — and our own self-awareness.