STANDARD OF TASTE

How small a flaw can you still hear?

Every pair is the same twenty seconds of music twice, and one of them has been damaged — the whole track sliding slowly out of tune across twenty seconds. Pick the damaged one. Get it right twice and the damage gets smaller; get it wrong and it gets bigger again.

The test walks down until it finds the size where you stop being sure. That size is your answer, and it is a real physical quantity — not a score out of ten.

~14 minutes. No sign-up. Headphones strongly advised — laptop speakers cannot reproduce most of what this measures.