We would be at a huge disadvantage on the energy front. Most easily accessible fossil fuels are gone. Some countries have oil deposits that can be reasonably ex

We would be at a huge disadvantage on the energy front. Most easily accessible fossil fuels are gone. Some countries have oil deposits that can be reasonably extracted now that the holes are made, but those places are few and far between. On the other hand there would be vast resources of refined steel, aluminum and other metals. The average home contains materials that would make a monarch from 200 years ago jealous. Not to mention invaluable machinery like precision lathes. You just need to find a way to power them. Without a readily available source for fertilizer and the supply chains necessary for modern agriculture we couldn't possibly feed more than a billion people or so. But whatever society rises from the ashes of that catastrophe could use the abundant building materials to harness water and wind energy and climb back up the technological ladder. Computing would be pretty low priority though, first we would need to get farming back on track. Without modern farming you need most of the population to work in agriculture, preventing you from making any significant progress in other fields.