I'm an optimist -- I think with the arrival of multiple vaccines of varying efficacies, potentially needing to be "boosted" or recalibrated at varying frequenci

I'm an optimist -- I think with the arrival of multiple vaccines of varying efficacies, potentially needing to be "boosted" or recalibrated at varying frequencies, coupled with cheap/fast/accurate tests and a supply chain that can keep up, I'm confident we can get to a state which resembled the previous in at least a few important ways: social interaction is sufficiently derisked that social gatherings can resume, travel will pick up again, large gathering places like schools can go back to in-person if not at 100% capacity, then maybe at 80-90%. WFH will likely persist. I personally miss going to conferences. It won't be the same (no period is ever exactly the same as some period in the past), but it will have some of the same qualities as the world in 2019. That's my hope.