So it says "In 1986, Geoffrey Hinton co-authored a paper that, four decades later, is central to the explosion of artificial intelligence." Is it just me that considers that 3 decades? I am curious which is the typo. Was it 76? or 3 decades?
1980's - first decade
1990's - second decade
2000's - third decade
2010's - fourth decade
I guess, technically, the third decade of age for this paper ended in 2016, making 2017 the fourth.
But this seems like silly ways to rationalize it. Genuinely seems like a typo.