Arena CEO @ml_angelopoulos explains why AI benchmarks stop being real the moment you start paying people to create them: "We have a constant stream of fresh real world data that helps people improve for actual tasks, as opposed to some random benchmark where I created my private data set with whatever lawyers I could find to pay." "There's an adverse selection problem. As soon as you're paying somebody to generate a benchmark, it's actually not real anymore." "There's no better judge than…