Prosperous for whom? There are people who are struggling to make ends meet, have their houses dispossessed, can't get steady jobs or afford housing, in student debt they can't pay, facing racism and violence from the state now and segregation in the recent past so its a matter of individual experiences and perspectives.

There are entire countries in the middle east that have been destroyed with millions dead, millions of refugees, families and infrastructure destroyed and set back a hundred years without consequences. And more are threatened as we embrace this new 'violence free' world.

On one side there are sweeping claims without evidence of the world getting 'better'. These kind of wide assertions would need a lot more data points and discussion by historians, economists and sociologists to get to some kind of 'truth' that is not propaganda.

Fortunately there are detailed works by academics like Piketty, Stiglitz and others with real data on stagnant wages and inequality over 40 years, on how gains are going to a small minority worldwide for those who are interested. Some may want to feel better because the current system favours them and that's perfectly valid. But sweeping claims about improvements sound as credible as the trillion dollar sv elite wanting to solve the worlds problems while failing to address the homelessness in their backyard.