A paw print in clay — it's not life itself and not a wheel, but it's clear: a being capable of thought was here. Just the same in space: traces of intelligence might hide between signs of life and technology. A new approach promises to find what we've been missing.
🎯 The most noticeable noosignatures are not signals, but garbage: our civilization has already left a layer of plastic that will persist in geological deposits for millions of years.
🎬 In the Strugatsky brothers' novel 'Roadside Picnic', the Zone left by aliens is full of artifacts whose meaning is completely incomprehensible — these are typical noosignatures.