Flap displays are being replaced by LCD boards in alarming numbers.
"In place of the iconic board above the main desk at Baltimore's Amtrak station, there now hangs a large digital board that works intermittently as it undergoes testing. For live information, passengers depend on two small temporary digital screens - miniature versions of what travelers might see listing arrivals and departures at an airport." -Michael Dresser, Baltimore Sun
"T wants high-tech sign to have low-tech sound...A steady ''tickticktickticktick" -Mac Daniel, The Boston Globe
If a flap display is clicking in a museum gallery, and no one is around to hear it, does it make a sound?