The issue with JIT is not so much about proxies as it's about optimizing for the general case at the cost of worst case performance. Things that suppose an inef

The issue with JIT is not so much about proxies as it's about optimizing for the general case at the cost of worst case performance. Things that suppose an inefficiency 99.99% of the time can be an indispensable redundancy or buffer in the face of events that are difficult or impossible to account for.