> You can't tell A is a bubble sort at all, and you can't tell B is a selection sort at all. That doesn't make any sense. You can trace them while they execute

> You can't tell A is a bubble sort at all, and you can't tell B is a selection sort at all. That doesn't make any sense. You can trace them while they execute, then compare and analyze the two traces? By definition obfuscation is always reversible or the software wouldn't even work any more. You can make it infeasible (timewise) to figure it out, but it's still possible, even if it takes infinite time.