eval is crucial, as that's the only way to agree with the computer what it is doing matches what you want it to do. I wouldn't worry about speeds. We should ex

eval is crucial, as that's the only way to agree with the computer what it is doing matches what you want it to do. I wouldn't worry about speeds. We should expect compute and inference to be faster in the future, where we can sample easily 10k programs in a second, check all of them against test cases. I'd worry about communicating precisely to computers when test cases are awkward to write.