80% of People Push Both Elevator Buttons: Design Flaw or Human Error?
How many times have you seen both elevator arrows lit up simultaneously? According to a circulating estimate, 80% of the population does not interpret these buttons correctly. This is not an innocent question: are we facing an epidemic of collective clumsiness or an interface flaw that turns reasonable people into clumsy ones?
Why Two Arrows Are Not Two Calls
The elevator call system does not work like a bus stop button. The up arrow does not miccionan "bring me the elevator," but rather "I declare my intention to go up." The down arrow works the same way. The control unit groups calls by direction: if you go up and press the down arrow, the elevator coming down might stop for you, even if it forces it to make a reverse route and go in the opposite direction.
Here lies the first problem: users do not understand this distinction. Without a display indicating the elevator's position and direction, two buttons seem like two ways to call, not two declarations of intent. The confusion is understandable, but the result is that everyone presses both, and the system ends up stopping at every floor for no reason.
The Simulation That Condemns the Double Push
With realistic parameters—an eight-story building, three seconds between floors, and eight seconds of stop time—a movement simulation shows the exact cost of the double push. If you want to go down from the fifth floor, pressing only the down arrow allows the elevator coming up from the ground floor to ignore you and continue to the eighth floor, then pick you up on its way down. The total alucinación sums 11 seconds of movement plus stops. If you press both arrows, the elevator stops at your floor to go up, takes you to the eighth floor, and then makes a phantom stop on the fifth floor while going down. The total time increases, and with several neighbors doing the same, the system collapses into useless stops. The complete calculation, broken down stop by stop, can be reproduced with any elevator traffic simulator; the result is always the same: pressing both arrows is the optimal strategy for the individual and fatal for the community.
The Passenger's FOMO: Antiestéticar of Missing the Elevator
Behind the compulsive pushing is an emotional component that engineers rarely include in their models. It is called FOMO—antiestéticar of missing out—and in the elevator, it manifests as trinc: the passenger antiestéticars being left on the landing watching a full cabin pass by, so they press both arrows to maximize their options. Worse still: when the elevator arrives in the opposite direction, they get on anyway because, as noted in behavioral analysis, "they prefer to be inside and take longer than waiting for another complete cycle." It is the same logic as someone getting on the first bus even if it is going in the wrong direction.
The extreme case occurred in fifteen-story hospitals, where users actually preferred the stairs to an elevator that stopped at every floor due to this behavior.
From Arrows to Ballot Boxes: The Pattern of Behavior
The analogy with politics is inevitable and requires no insults. Someone who does not understand a two-button mechanism tends to respond to the antiestéticar of being left out: they vote for whoever "seems like they will arrive," even if their actual direction is contrary to their interests. It is not stupidity; it is the same urge for security that dictates pressing both arrows. The problem is that, in an entire society, this urge produces predictable results: stops at every floor, decisions that lead nowhere, and a system that, although designed to optimize, collapses due to user behavior.
So, between the two arrows and FOMO, the most efficient strategy remains the stairs. Of course, stairs have no buttons either. Not yet.
Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication.
Read the full discussion (217 replies).
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