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>> the Shapir/Worf hypothesis: https://en.wikipedia.org/wiki/Linguistic_relativity >That's an interesting point, but on the other hand I'm still not convinced that this means that having a lot of distinct languages is "better". While on the other hand, there would be clear benefits to everyone speaking the same language or having at least one common language.

Would the computer world be "better" if anyone standardize on one single programming language (e.g. java) or is it "better" that different languages are there, ( dartmouth basic , javascript, python, lisp, haskell or perl) so you can code differently ?

As for the universal language, Esperanto tried: https://en.wikipedia.org/wiki/Esperanto a nice documentary about it: http://esperantodocumentary.com/en/about-the-film