I don’t understand why this is better than representing them as arrays? Arrays seems much more natural and simple and obvious to me. What are the advantages of nested lists over arrays?
This isn’t an opinion, but a statement if fact, and imho this is flat out wrong. Julia is without doubt the most transparent language I have come across, open source and mostly implemented in itself so you can easily find out how everything works. There’s also a heavy emphasis on consistency and internal logic which reduces (not removes) the amount of black box magic (until you dig deep, of course).
The transparency of the language is one of its main attractions, imo.