[erlang-questions] Why intra-node messages are copied and not refcounted, rationale?

[Nahuel Greco]

Given erlang data structures are immutable and acyclic, what's the
rationale for copying them when a process sends a message to another
process in the same node? What's the rationale of accepting a copying
cpu/memory overhead? Why a refcounting mechanism like the used for binaries
is not desirable for all the data structures?

Saludos,
Nahuel Greco.
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