Planetary VC founder @ramez explains why AI's enormous appetite for training data could become a major limitation, with Waymo needing 10 million miles to learn what teenagers can in under 1,000: "If you have to get training data by attempting things on humans, that means your data is much more limited. And current AI models require an enormous amount more training data than we do." "A teenager gets their driver's license after less than 1,000 miles of driving. It took Waymo the first 10…