> ## Content Index > Fetch the complete content index at: https://www.howardgray.net/llms.txt > Use this file to discover other available public pages before exploring further. # Groove Theory #35 - The Clear Cups - URL: https://www.howardgray.net/groove-theory-35-the-clear-cups/ - Published: 2026-09-20T06:50:36.000Z - Updated: 2026-09-20T06:50:35.000Z - Description: Penn & Teller do the oldest trick in magic in see-through cups, narrating the method as they go. You still can't see it. - Author: Howard Gray - Tags: Groove Theory 🥁 You're tuned in to ****Groove Theory** \- a newsletter about how creative ideas, careers, and live moments find their rhythm, structure, and presence in the world. New here? [Subscribe](https://www.howardgray.net/groove-theory). I'm your host, Howard Gray - founder of [Wavetable](https://rondo.wavetable.net/groove-theory?ref=howardgray.net). Currently: being asked to build digital tools for clients; creating a simulation game out of 11GB of files from my old career. The cups and balls is the oldest trick there is. Roman conjurors were doing it by the first century - three cups, a few small balls, balls appearing under cups they were never put under. Two thousand years of the same trick. Penn & Teller do it twice in a row. The first time, ordinary cups. Fine, lovely, you can't see how it's done. Then Penn stops and reads out the rules. Never do the same trick twice. Never tell the audience how it's done. Never let them see your preparation. And the fourth, he says, is unwritten, but any magician in the world would agree with it in a second: you never, ever do the cups and balls with clear plastic cups. Then they do it with clear plastic cups. The sort you'd get at a party. Tinfoil balls, because they're representing the United States of America, Penn says - totally American, totally disposable. And he narrates the whole thing as it happens. *Take the first ball, pretend to place it in our hand, having already snuck it underneath the first cup.* When the balls start moving between his hands he tells you what that is too. *This is not juggling. This is called misdirection.* You still can't see it. Watch Teller's hands closely. No, closer. They've been doing that to people for fifty-one years. The first show was at the Minnesota Renaissance Festival in August 1975\. They've been at the Rio in Las Vegas since 2001, the longest-running headliners at a single hotel in the city's history. Penn is the enormous one who never stops talking. Teller is the small one who never says a word on stage - a habit he picked up playing fraternity parties at Amherst, where a drunk heckler has nothing to grab hold of if you never speak. The double act is the least of it, though. What separates them from every other magician is that they refuse the lie. They operate outside the circle. --- ## The Tension Most magic is sold on the suggestion that something uncanny is happening. Penn & Teller decline. They'll tell you it's a trick, that they're lying to you, and that lying to you is the job. So much so, they spent seven years and 89 episodes on a television series debunking psychics, faith healers and assorted frauds. The clear cups are that position, done as a trick. The routine breaks every rule at once, including the unwritten one. It should be a disaster yet it's their most famous piece of work. Stephen Macknik's neuroscience lab ran eye-tracking on people watching Teller's hands and found some of the misdirection worked better than Teller expected, on people who were looking directly at the answer. The position cost them, mind. The Magic Circle has a rule against exposing methods. Fifty years of being the most famous magicians alive and ineligible for the club. They were finally admitted in 2025, which one imagines took some discussion. Teller: *"Virtually all the tricks Penn and I have explained were invented with an eye to explaining them."* Yeah, I had to read that twice as well. They built tricks that could survive being explained. Which is a much less romantic claim than "transparency is fine, actually," and a much more useful one, especially for Groove Theory readers. --- ## Step Into It I've got a method. The way I run the session, structure the pitch, edit the thing, handle the client who goes quiet for three weeks and then wants it within 24 hours. Somebody asks how I do it. Sometimes privately, which is flattering - usually. Sometimes publicly - via a talk, or a client who wants the framework attached to the contract. And there's a small pinch of anxiety, because if I hand it over, what exactly are they paying me for next time? So I do the vague version. Some principles, a nice diagram, nothing anybody could run on a wet Wednesday without me in the corner of the call. Then a friend playtested a workshop exercise on me, session one of a series she's building for neurodivergent people: map your own process. I picked game design. Not the diagram. The actual one, step by step, as you'd do it over weeks and months. It was much harder than I expected and we still haven't finished. You'll have one of these too. A framework or a process you'd sooner describe than hand over. Do it in clear cups and what's left? --- ## The Groove: Structure Teller's been clearer than almost anyone about why showing the method doesn't kill the trick: *"If you really understand what goes into a piece of magic, from the technical stuff to the history to the discoveries you make along the way, if you understand every single bit, it becomes more mysterious, not less."* More mysterious, not less. Once the secret's gone, all that's left to look at is the skill. Except he doesn't stop there. *"The greatest secret to making a deceptive piece of magic is you do it by the ugliest possible means. It's complex, it's unromantic, it's unclever… My job is to create that conversation. My job is not to show you what we went through for six years to make it happen."* Asi Wind, one of my favourites, on **Fool Us* in 2019\. He explains the method while he does the trick. They still can't see it. Clear cups, with a deck of cards. ### Packaging So the method gets shown. If it's any good, showing it deepens it. Most of what gets kept back is packaging secrecy: secrecy that exists to make the thing feel special, rather than secrecy the thing requires. The six years stay out because they're boring, not because they're secret. Nobody wants the outtakes. On the face of it this edition of Groove Theory was Rhythm, or Presence. Misdirection, timing, two men reading a room. But it's Structure. The routine survives being explained because it was built to, at the workbench, years before anyone saw it. ![Penn & Teller, by the numbers: 1975 the act forms; 2001 opened at the Rio; 12,000+ shows; 4 nights a week; 1,475 seats; $30m a year, Forbes estimate](https://storage.ghost.io/c/d8/1a/d81abdb4-b001-4d5e-9a22-7d2a3d72df17/content/images/2026/09/gt35-penn-teller-by-the-numbers.png) What's on the record. The workbench years aren't. ### Motive This is the bit of Penn & Teller I didn't expect. They don't read their reviews. Penn's reasoning, on Brian Koppelman's podcast, is that bad reviews don't hurt you much - but good ones can. In a good review, people speculate about what you're doing and why. It's flattering, and it's easy to agree. And then, without realising, you start doing the thing they said you were doing. He references Springsteen. After *Born to Run*, people decided he wrote songs about girls in cars. And then, every so often, he'd write a song about girls in cars. So they'll tell you exactly how the trick is done, and they won't let you tell them why they're doing it. Method, yes. Motive, no. --- 🎹 ****Groove Notes** ****1) Packaging secrecy.** The test is whether publishing the method would sink the work. Usually it wouldn't. Penn & Teller went further and built tricks to survive being explained, which is a harder brief than keeping a secret. ****2) Boring isn't the same as secret.** Showing the method isn't the same as showing the six years it took. The failed versions stay out because they're dull, not because they're proprietary. ****3) The kind review is the dangerous one.** Criticism you can weigh (and gnash your teeth at). Praise arrives with a theory of you attached, and the theory is what does the damage, because agreeing with it feels lovely. ![](https://storage.ghost.io/c/d8/1a/d81abdb4-b001-4d5e-9a22-7d2a3d72df17/content/images/2026/06/Five-Elements-of-Groove_Slim-1.png) Structure is one of the five elements of [Groove Theory ->](https://www.howardgray.net/groove-theory/) --- ## The Release The clear cups are cheap. Not custom props, not engineering - party cups and balls of tinfoil. Everything that makes the trick work is in the hands, and in the two thousand years of accumulated technique behind them, and in whatever Teller did for six years that we don't get to see. They'll show you the cups. They'll show you the balls. They'll narrate the method while they do it to you. And they won't read a word you write about it afterwards. Howard **P.S.** I wrote about the reviews part of this [back in 2019](https://www.howardgray.net/why-penn-teller-ignored-the-audience/), before I'd noticed it sat next to the clear cups. The earlier version of me working it out, if you want it. --- ## Bonus: how this newsletter gets made While I don't yet have a Vegas residency, it seemed only fair. ![](https://storage.ghost.io/c/d8/1a/d81abdb4-b001-4d5e-9a22-7d2a3d72df17/content/images/2026/09/GT_Database.jpg) Inside Groove Theory - **The pipeline is a database.** Every idea goes into Notion tagged with one of the five GT Elements, a tier, an industry, and some other notes and scraps I've collected. - **There's a selection approach:** enter through *the second*. Not Fela Kuti, but his drummer. Not the Beatles, the teenage engineer at the desk. Teller, not Penn. Fairly recent, that one - or it was kinda there all along and I just didn't realise it. - **I keep a ledger of the five Elements** and how often each has appeared. Presence has been the thinnest for about a year, which is embarrassing, because it's the one closest to what I do for a living. - **I use an editor** \- the software kind - to show me where I'm writing badly. The sentence I've written four times before, the phrase that sounds like me but isn't, the tidy conclusion I reach for when I haven't quite thought it through. But it doesn't write the thing. - **I draft early, then rewrite in a panic.** I've finished and scheduled a send more than 24 hours ahead perhaps three times ever. I'm writing this sentence 8 hours before sending. - **And there's a score.** A hundred points, purpose and craft. Under eighty and it goes back. One of the last four did. It was this one. --- ## Extended Mix - **Teller went to court over a trick, and won on the paperwork.** In 1983 he registered *Shadows*, his solo piece with the rose, with the US Copyright Office - not as a magic trick but as a pantomime. Twenty-nine years later a Belgian magician put a copy on YouTube and offered to sell the method. Teller sued. Magic tricks can't be copyrighted, the judge held, but *Shadows* was protected anyway, because of how it had been filed. $545,000\. He'd never tried to protect the method. He'd protected the form, three decades before he needed to. [The ruling](http://summaryjudgments.lls.edu/2014/03/the-shadow-tells-story-teller-gets.html?ref=howardgray.net). - **He published the rules too.** [Teller Reveals His Secrets](https://www.smithsonianmag.com/arts-culture/teller-reveals-his-secrets-100744801/?ref=howardgray.net), Smithsonian, 2012: seven numbered principles for fooling a brain, written by the man who doesn't speak. Number three is my favourite. It's hard to think critically while you're laughing, so follow the secret move with a joke. Which is roughly what Penn is doing with the tinfoil balls and the riff on the USA. - **They're a consulting interview question.** There's a BCG practice case that hands you the Rio show's profit and loss and asks whether the act "has become stale" and should be swapped for something off *America's Got Talent*. Sample answer: refresh the show. Real answer: [in June the Rio extended them through 2029](https://neon.reviewjournal.com/kats/long-running-vegas-headliners-announce-extension-through-2029-3336903/?ref=howardgray.net), after 12,000 shows by Penn's own count. Fifty years of refusing to be told what the act is for, and now a room of graduates gets asked to decide it. - **Penn's least favourite phrase in show business** is "this works". Because "works" is always somebody else's word, measured on somebody else's terms. I say this phrase sometimes when reviewing our stuff with the team. No longer.