In that case, the analogy is to open-heart surgery, which typically results in significantly reduced capacity for a long time at best, and often permanently. It

In that case, the analogy is to open-heart surgery, which typically results in significantly reduced capacity for a long time at best, and often permanently. It's certainly not something you bounce back from quickly or easily, and even if you're young and in perfect physical health, you have to be pretty lucky to come back all the way. Staying within the increasingly strained analogy, I don't think it is reasonable to describe the US economy as "young" or "in perfect physical health", or indeed even as anywhere close to either of those. This is more like doing an emergency sextuple bypass on an obese 70-year-old with a lifelong pack-a-day habit - even if the patient comes off the table alive, it's going to take a long and careful period of physical therapy and recovery to keep him that way, and he's almost certainly never going to recover all of even the limited capacity he had before the crisis.