Fallacies: S (Part 2 of 4)

Core idea

This stretch of the letter S gathers a noisy crowd of misconceptions — sharks that supposedly hunt swimmers, a Shakespeare who could not possibly have written his own plays, snakes that commit suicide, sneezes that stop the heart. What they share is a structure: a vivid mental image standing in for a fact nobody checked. The author's job, and ours, is to ask the boring follow-up question — how would we actually know? — and watch the image dissolve.

Why it matters

Each of these myths is harmless on its own, but together they teach a method. Fear inflates rare events, etymology gets invented after the fact, and a plausible-sounding mechanism is mistaken for evidence. Learning to spot those three failure modes in a beer-bottle-label superstition makes you better equipped to spot them in a headline.

Key takeaways

Mental model

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Practical application

When a striking claim crosses your path, run it through one filter: what observation would settle this? For shark danger, the answer is attack statistics, and they are public. For shaving, the answer is a controlled look at hair follicles. For an authorship theory, the answer is when the evidence first appeared — and a rival who shows up a century late is suspicious by timing alone.

Example

A friend insists that cracking your knuckles causes arthritis. Apply the filter: what observation would settle it? Long-term studies comparing habitual crackers with non-crackers — and they exist, showing no difference. The myth survives for the same reason the shaving myth does: a vivid sound or sensation feels like it must have a vivid consequence. It need not.

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