Logical fallacies

correlation is not causation

Two things move together. That is where your evidence stops.

  • Wrong: “Teams using this tool ship faster, so adopt it.”

    Right: “Do fast teams adopt it, or does it make teams fast?”

    The arrow may point the other way. Good teams pick good tools.

Four things can produce a correlation: A causes B, B causes A, something else causes both, or coincidence. The data alone can’t tell you which, and picking the flattering one isn’t analysis.

How to answer it: ask for the mechanism, or for what happened when someone changed A on purpose. That’s the whole reason controlled experiments exist.

Now go look for the mechanism.