Those are good points. A followup thought I had is that it (the Garbage Collector) doesn't have to clean everything up in predetermined constant time once it's

Those are good points. A followup thought I had is that it (the Garbage Collector) doesn't have to clean everything up in predetermined constant time once it's been deployed. Performance would be sufficient, if, for a given interval of time, it would knock down at least as many pieces of junk, as there were collisions and new launches for the same period, plus some "margin"/"premium" to keep the counter going down.