PG: How far will this flattening of data structures go? I can think of possibilities that shock even me, with my conscientiously broadened mind. Will we get rid of arrays, for example? After all, they’re just a subset of hash tables where the keys are vectors of integers.

SV: Get ready for a shock: Javascript already does this. Even worse: the integer keys are first converted to strings!

From this commentary on the hundred year language