Right. To make RC work like a tracing GC (performant and without failing on circular references); it's going to be a combination. That said, there are a lot of

Right. To make RC work like a tracing GC (performant and without failing on circular references); it's going to be a combination. That said, there are a lot of interesting ideas in this that might be quite worth it. Like the article referenced, doesn't do a full heap scan, but makes a note of what is worth looking at.