I did mention both a mundane case (shopping) and a specialised case (web conferences and technical documentation). Which is to say, I am interested in the experiences of web developers, but not, for example, of naval officers or fashion models. A common language would give me access to a larger pool of web developer experiences, just as is would give anyone who is into fashion access to a wider range of experiences of similarly-minded people. The absence of a common language prevents that.

> Let’s just not pretend that there is a trade-off

There are several assumptions behind this position.

One, that there are human experiences that require a very particular natural language to be expressed. That you need a whole unique system of phonology, morphology, syntax, etc. to be able to express your experience. I am not sure that this is the case.

The other is that the co-existence of a multitude of languages allows us to capture and communicate human experiences better.

Finally, as the life goes on, and the language — any language — evolves, we lose access to the previously expressed experiences anyway. So one language or many, we won't preserve human experiences.