But twin studies took a surprising twist in the 1980s, with the arrival of studies into identical twins who had been separated at birth and reunited as adults.
What could have been considered the beginning of a descent is now a potential turning point—the turning point you are most equipped to take full advantage of.
Yet this apparently disastrous turn of events turned out to be a blessing: “the best thing that could have ever happened to me”, Mr Jobs later called it.
Advanced batteries are moving out of specialized markets and creeping into the mainstream, signaling a tipping point for forward-looking technologies such as electric cars and rooftop solar propels.
In each of these examples, the scientists found that tipping points occurred and conditions changed dramatically over a relatively short period of time.