LESSWRONG
LW

The longer vocal announcement is the right thing, at least for me (and I have a typical mind, right?). The attention passengers” part gives me a second to stop thinking about whatever and start attending to the message. But you’re right that there is no need for that with a written message, since that can be attended to even after a delay.

[-]nim2y10

Beautiful!

One possible benefit to switching between an "attention passengers" screen and a "alewife train is now arriving" screen on the sign is that motion on the sign offers reassurance that the sign isn't frozen with old data up. This is probably a rare enough case to not be worth the massive amounts of cumulative wasted time over many passengers, and could be solved entirely by adding the time of the message. (Alewife train is now / arriving 12:54).

[-]jefftk2y20

motion on the sign offers reassurance that the sign isn't frozen with old data up

The sign is already transitioning from its default state (bus/train predictions) to the announcement, so I don't think that's an issue?

[-]nim2y10

Ah, in that case the problem I was imagining would never be relevant!

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