Yeah, isn't Lee Sedol playing with the same objective? It sounds like people are implying he's trying to thrash the AI. Or do they mean he can't help but have such an objective, subconsciously?
The issue is more that humans are not quite so confident of their positions as AlphaGo sometimes can be. If you are 100% sure that you're ahead by 1.5 points, you would play very differently than if you're ahead by 1.5 plus or minus five.
