This might not be unique to presidential speeches, but it’s where I’ve seen these things.

  • 4am@lemmy.zip
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    13 hours ago

    They reflect the screen below it, so that the audience can see the speaker even if the prompter is in the way; they are part of the teleprompter.

    The screen shows all the text backwards since it’ll be reversed in the mirrored image, so you need both for it to work.