[PaulDavisThe1st]

I left the world of protein folding in 1987 (quit my PhD) because I was certain that workable solutions were at least 25 years away, and I didn't think I was that kind of person to beat my head against a problem for more than two decades.

By 2013 (25 years later), still no real progress on protein folding.

In 2018 (30 years later) AlphaFold was revealed.