Well you could to some extent make the same argument over any attempts to predict the future. Global warming is an instance that comes to mind. The point of it

Well you could to some extent make the same argument over any attempts to predict the future. Global warming is an instance that comes to mind. The point of it all is that your assessment of the likely futures can effect your current actions. This sort of stuff can be particularly useful for tech startups. But to follow your style of argument - it can also be true that some people would prefer not to think of a future that is radically different from the past and present. So they will often reflexively turn away from that sort of discussion, dismissing it as pointless. This is the sort of attitude a lot of people displayed to the internet during its growth. I personally think there is maybe a 20% change he is close to right which to me makes it hugely significant and deserving of a lot more attention than it gets.