Charles Fillmore died in February. I only met the man once, briefly, but his work has been a great inspiration to me over the years, particularly frame semantics. Last week I came across this sign above, advertising a bar. The word “screwdriver” is ambiguous, because it can mean a hand tool to turn screws, or a drink made with vodka and orange juice. Fillmore’s frames help us to explore and understand that ambiguity.