Structural insight

each extensible language is surrounded by an envelope of possible extensions reachable by modest amounts of labor by unsophisticated users....

...if you cannot say what you mean, you can never mean what you say. — Centauri Minister of Intelligence, Babylon 5 . Ever since I star...

This is not at all what I had in mind. — Albert Einstein, in response to David Bohm's hidden variable theory. A no-go theorem is a ...