"ARC V3 is designed to be more resistant to the same kind of harness strategies as what we saw for V2. We have deliberately tried to create a private set of environments that is significantly different from the public set. The public set is meant to be substantially easier. Performance on the public set is not representative of how well the system would perform. That makes it a better test of fluid intelligence as opposed to a test of how much effort you put into cracking it."