"You bet it is! Listen. Every mammal brain has a built-in circadian clock. In the mousebrain, it’s in the suprachiastic nucleus. So we cloned a chunk of suprachiastic tissue, and embedded it in support gel. Those numerals are enzyme-sensitive cells that express firefly genes! And, Oscar, we gave it three separate neural clumps inside, with a smart neural net that automatically averages out cumulative error. So even though that’s a totally organic watch, it supplies accurate time! As long as it stays right at blood temperature, that is."