HN user
Turing machines only model computation. Real life is interaction. Check the work of Peter Wegner. When interaction machines enter into the picture, AI can be embodied, situated and participate in adaptation processes. The emergent behaviour may bring AGI in a pragmatic perspective. But interaction is far more expressive than computation rendering theoretical analysis challenging.
Please know that both languages share a lot (the BEAM). Either will do to get to know the technology.
You can decompile bytecode to erlang .
I have used Erlang when elixir still had to emerge. Today, I am using Elixir, with Phoenix LiveView and OTP Genserver, Supervisor and ETS.
I would start with Elixir, if only because of its newbie friendly community. The Erlang community is reflected in the 'erlang in anger' book.
But if you need to deploy on a small platform, say 32 bit 100MBytes, Erlang is the way to go.