What do you think will be humanity's biggest challenge in the 2020s and going forward in the 21st century? Global warming? Economic inequality? Automation? Immigration? The digital divide? Something else? I think the widening gap between the rich and the poor has reached such extremes that it will cascade into the collapse of capitalism as we know it today, and I think it will be one of the biggest challenges of the 21st century as civilization finds ways to restructure itself around better systems of facilitating and managing human well-being . . . if it can do so.