File 03 — The Coincidence Machine
The Coincidence Machine
Two lines that move together, for no reason at all.
Cage films and pool drownings. Cheese and deaths by bedsheet entanglement. The famous ones are real, published, and meaningless. And you do not even need real data: deal random pairs from a pile of unrelated things and watch near-perfect correlations fall out of pure noise. Then turn the dial that explains it. Compare enough things and a few are guaranteed to line up by luck. Two lines agreeing is where a question starts, not where it ends.
each line on its own scale — rescaled like that, almost anything looks aligned.
They move together at
r = 0.916
1.000 is lockstep. These two have nothing to do with each other, and they got there anyway.
One must be driving the other.
⌃neither. Two random things, lined up.
Why this is never hard to find
None of these get discovered. They get searched for. Compare enough things and some line up by luck alone. Move the dial:
Pairs you can compare
499,500
every two of them, counted
Coincidences you should expect
≈ 5
if 1 in 100,000 lines up by luck
A tight correlation is cheap. Lay enough lines over each other and a few trace the same path for no reason at all. Two lines agreeing is where a question starts, not where it ends.
The famous real ones — Nicolas Cage films and pool drownings (r ≈ 0.67), cheese and deaths by bedsheet — are catalogued by Tyler Vigen. The pairs above are generated, to show how easily it is done.