The Stuff You Should Know Doin’ Science Playlist: Things We Believed Before the Scientific Method
June 19, 2026
AI Summary
5 min read“A theory is not just something you postulate,” Josh Clark says about halfway through this episode of Stuff You Should Know. “A theory is beyond the hypothesis, and it is something that is strongly supported in many different ways.” That distinction — between the colloquial “I have a theory” and the scientific meaning of the word — is the thread that runs through this whole conversation. Josh and Chuck are not just explaining the steps of the scientific method. They are trying to show why the method matters, how it actually works in practice, and where it breaks down when people misuse it.
What science is and how it works
The episode opens with a definition from writer William Harris: science is “an intellectual and practical activity encompassing the structure and behavior of the physical and natural world through observation and experimentation.” Josh and Chuck stress that science is not something locked away in labs. It is a hands-on, curious activity anyone can use. If your car overheats and you figure out why and fix it, you have used the scientific method.
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What you'll learn
- 1 (02:13) **Episode Kickoff & Defining Science** - Josh and Chuck introduce the episode as part of a science playlist, defining science as a practical, intellectual activity encompassing observation and experimentation.
- 2 (09:56) **Observation & Data Types** - The hosts explain the role of observation in science and the two main types of data.
- 3 (12:18) **Inductive vs. Deductive Reasoning** - A breakdown of the two core reasoning methods used in science.
- 4 (18:09) **Hypothesis vs. Theory vs. Law** - Clarifying the scientific definitions of these commonly confused terms.
- 5 (27:10) **Historical Context: The Dark Ages to the Renaissance** - The hosts discuss the suppression of science in Europe and its revival through rediscovery of classical thought.
- 6 (29:43) **Key Figures: Roger Bacon, Albertus Magnus, and Francis Bacon** - The contributions of these thinkers to the development of the scientific method.
- 7 (34:08) **Cell Theory and the Power of Collaboration** - The story of how scientists built on each other's work to develop cell theory.
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Guests on this episode
Show Notes
It’s easy to think of people in the distant past as kinda dumb for believing things like that mice could spontaneously generate from old grain. But if you look a little deeper, you’ll find there was a sensibility to the odd beliefs that came before science.
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