"if erlang drives phone switches why not payments"To this day it still holds. Some of the very basic tenants of erlang and Joe Armstrong's erlang guides still hold. My favorites are "early optimization" and "crashing".
The fact is... erlang is an elite language for the elite programmer. But too many programmers have selected erlang because they want to be elite which is clearly the wrong end of the telescope.
PS: haskell too.