21:55:23hayleyAnother dropped message apparently. How are obsolete instances detected again? I wonder if you can update the class first and use obsolete instance detection to spot a CHANGE-CLASS in progress.
21:56:56hayleySo an object could have values <old class, old rack>, <new class, old rack>, <new class, new rack> and we want to detect the second.
23:58:23Bikeobsolete instance is detected by mutating all relevant generic functions to hit the updater on objects with the old stamp
23:59:46hayleyRight, the class pointer isn't consulted so that wouldn't work.
23:59:46Bikebut i think a change-class concurrent with a dispatch isn't the problem, so much as doing two change-classes concurrently
23:59:52Bikenot that that happens very often obviously