Stuff You Missed in History Class
Episode Title: Modern Inventions That Are Actually Old
Hosts: Holly Fry & Tracy V. Wilson
Published: May 6, 2026
Episode Summary
Main Theme and Purpose
In this episode, Holly and Tracy explore three everyday items or technologies often thought to be modern inventions, revealing how each actually dates much further back in history. Through engaging stories and historical deep dives, the hosts challenge the “present-tense hubris” that assumes certain inventions are unique to the recent past. The episode’s aim is to illuminate just how advanced and inventive ancient societies were, offering surprising and delightful details about the true ages of things like vending machines, breath mints, and disco balls.
Key Discussion Points & Insights
1. Heron of Alexandria and Ancient "Modern" Machines
[02:26 – 13:23]
- Background on Heron (Hero) of Alexandria:
- First-century scientist/engineer; described as Greek and/or Egyptian.
- Famous for writings on mathematics, mechanics, geometry, and practical inventions.
- Mathematical Influences:
- Credited for popularizing the division of a circle into 360 degrees (Babylonian origin).
- “If you've ever used the idiom that someone has made a 180-degree turn... you can thank Heron, at least in part.” — Holly Fry [04:50]
- Work on Machines & Engineering:
- Wrote “Mechanica” (on levers, friction discs—precursors to transmissions), “Dioptera” (surveying instruments), and “Metrica” (geometry formulas).
- “His math writings included...the basics of the kinds of drives that would be described as transmissions today.” — Tracy V. Wilson [05:55]
- Heron's “Pneumatics” and Automata:
- Describes devices powered by gas, water, and steam, centuries ahead of practical industrial use.
- Eolipyle (Hero’s Engine): An ancient steam engine.
- “He was essentially onto the idea of airflow and air mechanics...” — Holly Fry [08:37]
- Modern versions are recreated today, but Heron's version had the water in a base cauldron and used steam to spin a suspended sphere [10:02].
- Initially a ‘toy’—no practical application at the time, but a clear forerunner to steam engines [10:31].
- Ancient Vending Machine (“Sacrificial Vessel”):
- Dispensed holy water upon coin insertion—a coin tipped a lever and opened a valve for water to flow [12:35].
- “This vessel looked sort of like a samovar...and its intent was to dispense holy water at temples.” — Tracy V. Wilson [12:35]
- Next significant vending machine: London, 1880s [13:23].
- Holly notes the wonder of technology lying dormant: “It could have completely changed the world if they had been like, I bet we could apply this to a vehicle.” [10:56]
2. Breath Mints: Not as Modern as You Think
[15:24 – 22:52]
- Mint as a Plant and Its Ubiquity:
- Grows everywhere; hard to trace its precise origin; used globally since antiquity.
- “If you look it up, you will find texts that say that it originated in any number of areas...” — Holly Fry [15:24]
- Pliny the Elder’s Accounts:
- Mint mentioned as food, remedy, aromatic table decoration, and breath freshener.
- Notable quotes:
- “Wild mint, cat mint, endive and pennyroyal will grow even without cultivation.” — Pliny via Tracy V. Wilson [16:13]
- “Leaves of wild mint are kept dried and reduced to a fine powder as a remedy for poisons...” — [17:27]
- “The very smell of mint reanimates the spirits, and its flavor gives a remarkable zest to food...” — [17:43]
- Breath Mints in Ancient Egypt:
- The Ebers Papyrus (~1550 BCE) included recipes for “mouth pills”—tablets made from pleasant-smelling herbs and honey, sometimes used as air fresheners and then as edible mints.
- “[The recipe] is also worthwhile to make mouth pills out of them to make the smell of the mouth agreeable.” — Holly Fry quoting the Ebers Papyrus [21:20]
- Ingredients included myrrh, elderberries, cypress resin, calamus; mint not specified, but likely included in later centuries.
- Calamus, one ingredient, is actually toxic and psychoactive—“maybe it just made people think their breath smelled better.” — Tracy V. Wilson [22:08]
- By Pliny’s time, mint had become a common oral freshener in Europe and the Mediterranean.
3. The Disco Ball – The “Myriad Reflector” Predates Disco
[22:52 – 33:29]
- The Myth of the Modern Disco Ball:
- Though associated with the 1970s, mirrored balls date to late 19th and early 20th centuries.
- Early Documentation and Patent:
- First rumored mention: 1897, Charleston, Massachusetts Electricians Union party (unconfirmed in primary sources).
- [23:51] “Even when Wiesty was still a kid, there was a mention of a mirror ball in a trade paper...”
- Louis Bernard Wiesty: Patentee of the ‘Myriad Reflector’
- Filed for patent Feb 12, 1916; granted Feb 6, 1917.
- Patent described as: “a myriad reflector comprising mirrors mounted to form a polyhedron bounded by a convex system of plane faces... to produce myriad reflections when light rays from an extraneous source are thrown thereon.” — Tracy V. Wilson [26:12]
- Wiesty aimed to prevent copycats by patenting mirrored reflectors in non-spherical as well as spherical forms.
- The description was notably poetic:
- “The object of my invention is to produce a myriad reflector...to produce a scintillating and spectacular effect.” — Wiesty, quoted by Holly Fry [27:13]
- Spread of the Myriad Reflector:
- Wiesty set up a company producing and leasing these for dances and municipal celebrations.
- Newspaper ads and articles from 1917 onwards describe the dazzling effects; featured at major venues and balls.
- “During the Grand March, the hall was darkened and from a Myriad Reflector sparks of every color were flying over the ceiling, making a most dazzling and wonderful scene.” — Piqua Daily Call, quoted by Tracy V. Wilson [28:45]
- “Transforms a hall into a brilliant fairyland of flashing, changing, living colors, a marvel of kaleidoscope charm.” — Great Falls Leader, [30:21]
- The rotating motor was a later patent (applied 1924, granted 1928), and became synonymous with the disco effect.
- Later History:
- Wiesty’s family ran the company after his death (1933), closing in 1945.
- Omega National Products (Louisville, KY) dominated disco ball production by the 1970s disco craze, though many other manufacturers joined later.
- Holly, self-admitted “magpie,” proclaims “You can't put enough mirror stuff on things for me. I love it. I'm obsessed with it.” [33:29]
Notable Quotes and Memorable Moments
- On Historical Bias:
- “Often that is the result of...present tense hubris, where we can't imagine another time or culture needing or inventing the things that we use today.” — Holly Fry [02:26]
- On Missed Opportunities:
- “It could have completely changed the world if they had been like, I bet we could apply this to a vehicle.” — Holly Fry, imagining Heron’s eolipyle being utilized early [10:56]
- Wiesty’s Literary Patent:
- “The device is an immense globe, 27 inches in diameter, completely covered with more than 1,000 special made mirrors. When spotlights are thrown on the rotating ball, the reflections... are multiplied into a dazzling, dancing, indescribable lighting effect that is simply immense.” — Great Falls Leader, quoted by Tracy V. Wilson [30:21]
- Playfulness and Enthusiasm:
- “You can't put enough mirror stuff on things for me. I love it. I'm obsessed with it.” — Holly Fry [33:29]
Timestamps for Key Segments
| Timestamp | Segment |
|------------|----------------------------------------------------------------------------------------|
| 02:26-03:41| Introduction & modern inventions being older than assumed |
| 03:41-13:23| Heron of Alexandria: mathematical legacy, eolipyle, and the ancient vending machine |
| 15:24-22:52| History of breath mints: ancient Egypt to Pliny the Elder |
| 22:52-33:29| The disco ball: origins, patents, and cultural rise |
Tone and Language
The episode is witty, approachable, and brimming with genuine curiosity. Holly and Tracy blend historical rigor with playful speculation and personal asides, creating an inviting atmosphere for listeners who may not be familiar with the topics. Technical explanations are made accessible, and quotes from historical sources are delivered with enthusiasm and context.
This episode is a delightful reminder that so much of what we think of as characteristically modern—the vending machine, the breath mint, and even the disco ball—has roots stretching deep into human history. The hosts’ passion for the inventive spirit across the ages makes this a must-listen (or must-read summary) for curious minds.