Explore Capsules

14 capsules

A Critical Thinker's Guide to Testing Stories and Claims

A Critical Thinker's Guide to Testing Stories and Claims

Some stories survive because they are true, and some just because they are good, and telling the difference takes more than gut feeling. These methods differ on what counts as solid ground: some weigh the reliability of sources, others lean on hard data and statistical measures, and others read physical or historical traces. You'll be able to pick the right way to test a claim before you believe it or pass it on.

Evidence evaluation · 99 stops · ~198 minFree
Self-Testing and Memory: Evidence, Feedback, and Study Choices

Self-Testing and Memory: Evidence, Feedback, and Study Choices

Rereading notes feels productive, but testing yourself locks learning in far more effectively. These findings cover the memory boost from active recall and feedback, the study designs and statistics used to measure it, and debates over how widely the effect holds across learners and material. You can decide how to study for what actually sticks.

Testing effect · 101 stops · ~202 minFree
Gut Microbiome Testing: Reliability, Regulation, and Diet Decisions

Gut Microbiome Testing: Reliability, Regulation, and Diet Decisions

Despite popular marketing, gut microbiome tests lack FDA approval and clinical reliability, making them unsuitable for diagnosing conditions or guiding diet changes. The mainstream hype suggests these tests offer personalized health insights, but experts warn against making lifestyle or medical decisions without professional advice. Following this cautious approach helps avoid ineffective or potentially harmful self-prescribed treatments based on unproven test results.

Gut health · 63 stops · ~126 minFree
The Scientific Method in Practice: Inquiry, Evidence, and Teaching

The Scientific Method in Practice: Inquiry, Evidence, and Teaching

Scientific inquiry is often taught as a fixed sequence, but real research moves through questioning, evidence, interpretation, revision, and judgment in more complex ways. This capsule examines how the scientific method has been represented in classrooms and practice, helping readers understand how science works and how it can be taught with greater accuracy and depth.

Science education · 73 stops · ~146 minFree
Studying Lasting Love: Evidence, Methods, and Limits

Studying Lasting Love: Evidence, Methods, and Limits

Studying love scientifically forces awkward choices about what counts as evidence. The methods here span controlled experiments chasing cause and effect, frame-by-frame observation turned into math, deep single-case studies, and models that treat couples as constantly shifting systems, with some researchers insisting there are hard limits on what any of it can know. Where you land shapes which relationship advice you take seriously.

Relationship research · 107 stops · ~214 minFree
The Replication Crisis: Preregistration, Statistics, Transparency, and Incentives

The Replication Crisis: Preregistration, Statistics, Transparency, and Incentives

The replication crisis has exposed how fragile published findings can be when studies are repeated under closer scrutiny. This overview explains the roles of preregistration, statistical thresholds, trial transparency, and professional incentives in shaping research reliability. Readers will understand the main reform proposals, their tradeoffs, and why the debate over whether science can correct itself remains unresolved.

Replication crisis · 99 stops · ~198 minFree
Astrology and Evidence: Testing, Bias, and Self-Reflection

Astrology and Evidence: Testing, Bias, and Self-Reflection

Astrology keeps failing rigorous tests of predictive power, yet millions still organize their lives around it. These views span the science that debunks it, the cognitive biases that sustain belief, and the case for horoscopes as tools for self-reflection rather than prediction. Weighing them shows what astrology can't do and what it still does for people anyway.

Astrology · 99 stops · ~198 minFree
SAT and ACT Fairness: Inequality, Diversity, and Admissions Tradeoffs

SAT and ACT Fairness: Inequality, Diversity, and Admissions Tradeoffs

Whether standardized tests reward real ability or just mirror the money and schooling a student had shapes who gets into college. These views span tests as a symptom of deeper inequality, test-optional policies as a diversity fix, the legal fallout after the Court banned race-conscious admissions, and the messy trade-offs of dropping the tests at all. Explore them to form your own read on fairness.

Standardized testing · 77 stops · ~154 minFree
Statistics Without Context: Reading Numbers Before Believing Them

Statistics Without Context: Reading Numbers Before Believing Them

Statistics feel like proof, which is exactly why flawed arguments and propaganda lean on them. Against the habit of taking numbers and expert endorsements at face value, the case here is to interrogate context, assumptions, and reasoning before believing any figure. Read data that way and manipulation becomes far easier to spot.

Critical thinking · 86 stops · ~172 minFree
String Theory and Falsifiability: The Test of Real Science

String Theory and Falsifiability: The Test of Real Science

Science earns its authority by making predictions that could fail, and string theory doesn't. Against its popularity among physicists, the argument here places untestable theory closer to metaphysics than physics, however elegant the math. Taking this view means judging every theory by whether an experiment could ever prove it wrong.

String theory · 74 stops · ~148 minFree
Structured Interviews: Fairer Hiring Beyond Cultural Fit

Structured Interviews: Fairer Hiring Beyond Cultural Fit

Structured interviews with standardized questions and scoring are proven to predict job performance far better than unstructured interviews that rely on subjective cultural fit judgments. The common practice of hiring for cultural fit often masks bias and discrimination, disadvantaging diverse candidates. By focusing on objective, job-related criteria through structured interviews, employers can reduce bias and make fairer, more accurate hiring decisions.

Hiring bias · 86 stops · ~172 minFree
Drug Research Bias: Ghostwriting, Trial Data, and Patient Protection

Drug Research Bias: Ghostwriting, Trial Data, and Patient Protection

The research behind your medications may carry hidden ghostwriters and massaged trial data. The views split on the remedy: exposing manipulated studies one by one, forcing legal and regulatory reform on the companies, or practicing evidence-based care that routes around the bias, especially for vulnerable patients. Decide how much to trust drug claims and how to protect yourself in the meantime.

Pharmaceutical industry · 78 stops · ~156 minFree