Jeremy gave a talk today on associative arrays and said this during the Q&A:
"Python's mathematics is fundamentally broken; there are too many ways to represent 2D arrays due to decisions made 15 years ago... For Python programmers we recommend them to use Julia. We find that Julia gives Python programmers the correct mathematics in the environment they like. Using Julia is almost the easier solution than fixing Python." Thanks, Jiahao Chen Staff Research Scientist MIT Computer Science and Artificial Intelligence Laboratory