With regards to danger this 5 minute video  by Stephen Fry conveys a powerful idea.
I think all of Western Philosophy in the last 120 or so years has concerned itself with the "linguistic turn" . If you follow the breadcrumbs from Wittgenstein, Frege, Russell, Dumett, Chomsky, Quine etc. at a high-level you may begin to observe a common thread, patterns and concepts between Logic and Language which have been crystalized in Programming Language Theory .
At the risk of being a little too radical (with some intent of shock value) my view is that Truth is constructed not discovered . This is also an argument Richard Rorty makes in "Contingency, Irony and Solidarity" . Ultimately, language is a tool . The responsible use of any tool (be it language or a gun) is a moral concern and an individual responsibility.
For unpacking the question "What is communication?" there's no better starting point than Shannon's "The Mathematical theory of Communication" 
(The book version of Shannon's paper  is even a bit better.)
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