You are standing between two unmarked doors.

One leads to Pandora's Box access; the other to the abyss of curiosity. In front of each of the doors is an identical-looking artificial-intelligence robot.

One is programmed to answer every question truthfully; the other is programmed to falsely answer every question. You have no way of knowing which robot is the lie-teller or truth teller. You can ask only a single question of either robot. And you want to go through the door to Pandora Box Access.

What single question will ineluctably lead you to the right door?
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