Here's a thorough answer by someone who has worked a lot on types, optimizations and numerical libraries, and who still uses Python as his first language (for academic purposes):Why not: from Common Lisp to Julia https://gist.github.com/digikar99/24decb414ddfa15a220b27f674... > The unnecessarily-long-for-debugging compilation times certainly put me off. I think I do like the semantics of Julia bet