AlphaGo winning was the cherry on top but what was really even more intense was the actual battle in itself. It was like Lee Sedol was playing himself but a version of him that would get better and better each time Sedol attacked. AlphaGo surprisingly chose the right strategy which was to be aggressive right back.
Overall, I could identify with the commentator's excitement and sort of apprehension that the first battle against the Machines have begun and lost the first round.
Lee Sedol must have been taken back at how good AlphaGo is I think he seriously underestimated it because he had a lot of hubris and over confidence going in like 'yeah imma smack the shit out of alphago' and then it after the match is like 'damn gg'.
The biggest ground breaking realization is that deep learning has become so good that it is possible to outperform a human even in previously thought impossible problems....who would've thought a bunch of logic gates fast forward 40 years we have machines that beat us in our own games? 80 years from now what will things look like?
It's a real reckoning and I really feel the drive to learn deep learning just don't know where to start