In 1978, at a copying machine in a university library, an experimenter asked the person about to feed the machine for a small favor. "Excuse me, I have 5 (20) pages. May I use the xerox machine, because I have to make copies?" Read that reason twice. The asker is standing at a photocopier. Making copies is what the machine and the line are for. The sentence adds nothing a person standing there does not already know. And when the ask stayed small, 93 percent of the people who heard it let the experimenter go first anyway.
The study was real, and the line was real. Ellen Langer of Harvard, with Arthur Blank and Benzion Chanowitz of the City University of New York, published it that year in the Journal of Personality and Social Psychology, under a title that carries the whole thesis: "The Mindlessness of Ostensibly Thoughtful Action." Cynthia Weinman conducted the first experiment at the copier, with one other experimenter, and 120 people stood at that machine across that experiment. Each heard one of three scripts. Request only: "May I use the xerox machine?" Placebic information, the paper's own term: the sentence above. Real information: "May I use the xerox machine, because I'm in a rush?"
On small requests the table reads like a trick. No reason at all, and 60 percent of the line still let the experimenter through. The empty reason: 93 percent, fourteen of fifteen. The true reason: 94 percent. A reason that conveyed nothing performed within a single point of a reason that conveyed the truth. On a small favor, the word "because" did all the work.
Langer's explanation was scripts. In the paper's framing, social life runs on prior scripts, "written when similar information really was once new," and reenacted without inspection. A request that arrives with the shape of a reason attached fits the slot marked reason; the mind files it, and the body complies. Nobody in that line read the reason, because on a five-page favor there is nothing to read. Robert Cialdini retold exactly this half in Influence - the 94, the 60, the 93 - and the twenty-page half of the experiment appears nowhere in his telling. I checked, because the second half is the entire lesson.
The twenty-page half
That "(20)" in the script was the other run. Sometimes the experimenter held twenty pages, and whenever the person in line held fewer, the same words asked for a much longer wait - standing aside while twenty pages worked through the machine. The favor had crossed from small to large, and the magic word died at the border. No reason: 24 percent complied. The empty reason: 24 percent, six of twenty-five, indistinguishable from silence. The true reason, "I'm in a rush," held 42 percent, ten of twenty-four. Truth kept less than half the power it carried at five pages.
The authors' summary is the whole lesson in one sentence: "Once compliance with the request required a modicum of effort on the subject's part, thoughtful responding seemed to take the place of mindlessness, and the reason now seemed to matter." When the favor costs the giver something real, the script breaks, and the reason gets read for the first time.
Most marketing copy is an empty reason aimed at a big favor. "Because we're passionate about quality." "Because your success is our mission." In the five-page world - a glance, a scroll, a tile in a feed - those lines honestly work; nobody reads them, they set a tone, and the moment passes. The mistake is believing they survive the border. A signup is a twenty-page favor. So is a checkout, an email address handed over, a habit started. Past that line the reader stops filing and starts reading, and a reason that was always empty earns exactly what an empty reason earned in 1978: nothing over saying nothing.
Where the border runs here
This is the arithmetic behind every bid on this board. A tile asks a browser for almost nothing - the five-page end of the scale, where a warm line is genuinely enough. The submission form asks for the reason too: a URL, a tagline, an ad description. And the mechanics around it are public - the minimum bid back to $1 on the 1st of every month, a first bid that must top the current leader by at least $1, every placement labeled Sponsored - so the one thing a reader cannot check without clicking is whatever the tagline claims. The click is the border. Attention lands on the page, and the because you printed gets read for the first time, at exactly the moment it has to be true.
So spend the real reason where reasons get read. The empty one will carry the glance and drop the visit - 93 collapsing into 24 - while a true one keeps nearly half its power even at the heaviest asking size. Half of something beats all of nothing. Write the reason you can defend, then put it at the front of the line - bidspotlight.com/submit.