The Risks of Echo Chamber Training: “Beam Us Up, Scotty”

by Stan B. Walters – The Lie Guy® LLRMI
ORCID 0009-0002-1063-0519
DOI: 10.5281/zenodo.21429095

Most people recognize the famous Star Trek phrase, “Beam me up, Scotty.” There is only one problem: Captain Kirk never actually said it that way. The line became widely accepted because people repeated it until it sounded authentic. A similar problem occurs in interview and interrogation instruction. One instructor repeats something learned from another instructor, the original source is never examined, and the claim is eventually accepted as fact. This echo chamber creates three serious risks: unsupported information spreads through the profession, repetition is mistaken for proof, and investigators may use methods that cannot withstand close review.

Unsupported Information Spreads

Most bad information does not begin with someone deliberately trying to mislead a class. It often begins when an instructor repeats something heard at another school, seminar, or conference. The instructor trusts the person who presented it, and the students trust the instructor standing in front of them. Those students then return to their agencies and pass the same lesson along to coworkers, supervisors, and future investigators.

As the information moves from one person to another, the original source becomes harder to identify. Eventually, nobody knows whether the claim came from scientific research, personal experience, professional tradition, or an unsupported opinion. When someone asks, “Where did that come from?” the answer is often little more than, “That is what I was taught.”

This is how unsupported ideas become embedded in professional practice. A claim such as “liars avoid eye contact” may be repeated so often that investigators begin treating it as an established fact. The lesson survives because it is familiar, not because anyone has examined whether it is accurate.

Once an idea becomes part of an agency’s accepted practice, correcting it can be difficult. New investigators learn it from experienced investigators, supervisors reinforce it, and instructors may continue presenting it because it has been taught for years. Repetition gives the claim the appearance of authority even when reliable support is missing.

Repetition Is Mistaken for Proof

People tend to become comfortable with information they have heard many times. That familiarity can create a dangerous shortcut. Instead of asking whether a claim is supported, they assume it must be true because it has been repeated by several instructors or used by several agencies.

Statements such as “I learned it at the academy,” “That is what our instructor taught,” or “We have always done it that way” explain where a belief came from, but they do not prove the belief is correct. The number of people repeating a claim does not make the claim more reliable.

Experience and field knowledge are important. Skilled instructors can provide valuable lessons based on years of practical work. However, experience does not automatically turn every observation into a fact. An instructor may have used a method for twenty years and sincerely believe it works, but that belief does not establish that the method produces accurate or dependable results.

A practice may appear effective because it occasionally produces the desired outcome. That does not mean it works consistently, that it works for the reason the instructor believes, or that another method would not produce better results with fewer risks. Before a claim becomes part of an investigator’s regular practice, someone should be able to explain its source, the evidence supporting it, and the limits that apply to it.

Unsupported Methods Create Real Risk

Echo chamber instruction is not merely an academic concern. It can influence the direction of real interviews and investigations. An investigator who relies on unsupported behavioral cues may mistake fear, stress, confusion, or cultural differences for deception. An interviewer who believes confidence equals accuracy may place too much weight on a mistaken witness. An investigator taught that obtaining a confession is the primary goal may overlook warning signs that a statement has been contaminated or is unreliable.

These mistakes can cause investigators to focus on the wrong person, dismiss important evidence, ask leading questions, or interpret innocent behavior as suspicious. They can also affect how witnesses and suspects are treated and how their statements are documented. A weak instructional claim can therefore influence decisions throughout an entire investigation.

The risks do not end when the interview is over. Interview methods and investigative decisions may later be reviewed by supervisors, prosecutors, defense attorneys, judges, and jurors. When an investigator is asked why a particular method was used, the answer “That is what I was taught” may lead to another question: “What was that instruction based on?”

That is why interview and interrogation instruction should be regularly checked against current, peer-reviewed research. Research does not answer every operational question, and instructors should not ignore the value of field experience. However, they have a responsibility to clearly separate supported findings from personal opinions, professional traditions, and practices that have never been properly tested.

Inspect the Source Before Repeating the Lesson

“Beam me up, Scotty” became famous because it sounded right and was repeated often enough that people stopped questioning it. That is harmless when discussing a television program. It is far more serious when the same process shapes the methods used in investigative interviews.

Before repeating a lesson, instructors and investigators should ask where it came from, what evidence supports it, and whether newer research has changed what is known. Familiarity is not proof, confidence is not proof, and tradition is not proof. A professional practice should survive because it has been examined and supported, not simply because it has been repeated.

© Copyright 2026 by Stan B. Walters. Brief excerpts may be quoted with attribution and a link to the original article. Reproduction, redistribution, or use in training materials requires written permission.

See a recent the recent episode of Inside the Interview Room that covers this topic.
Watch here: Episode #41

About the author:

Stan B. Walters, The Lie Guy®, is an LLRMI instructor with more than 40 years of experience and approximately 50,000 hours of presenting investigative interview and interrogation skills development. Every course he presents is audited against current peer-reviewed scientific research before it is delivered. These skill development presentations can be arranged by your agency thru LLRMI.