Coincidences can be evidence for correlation and therefore evidence for causation, as long as one remembers that evidence—like more things than most people feel comfortable with—are quantitative, not qualitative. A single coincidence, of even multiple coincidences, can make a causation less improbable—but it can still be considered very improbable until we get much more evidence.
Coincidences can be evidence for correlation and therefore evidence for causation, as long as one remembers that evidence—like more things than most people feel comfortable with—are quantitative, not qualitative. A single coincidence, of even multiple coincidences, can make a causation less improbable—but it can still be considered very improbable until we get much more evidence.