I think the author is unfamiliar with the concept of "shared pool of meaning". Part of interacting is comparing our individual pool of meaning with another to see where we match or don't and going from there to refine our shared pool of meaning in order to coordinate.

Context, nuance, and circumstances always matter.

If I ask someone to "describe water". It might seem like an "easy" task. But the complexity become apparent when we think more broadly. You might describe it by it's chemical formula H2O. You might describe how it behaves under various circumstances (boils at 100°C and freezes at 0°C - under "normal" atmospheric pressure, at sea level, on Earth - those temps are different at elevation or on another planet with different atmospheric conditions) and if someone isn't familiar with the Celsius scale, those number wouldn't "mean" anything to them. There is prerequisite knowledge that builds off other prerequisite knowledge, which is why advanced classes often have prerequisites to make sure the learner has a foundational understanding of the underlying concepts before building upon that foundation.

This is why science gets documentation. It allows us to expand our collective shared pool of meaning beyond our lifetimes and update our understanding as we build upon those foundational tenets.