In the animated movie “Finding Nemo,” a clownfish (ironically named Marlin) and a regal blue tang fish set off on an improbable journey: to find Marlin’s missing son Nemo (also ironically named). Dory suffers from short-term memory loss, regularly becoming distracted and forgetting what she was doing, which creates all sorts of adventure and comic relief.
When Marlin is discouraged and ready to give up hope, Dory tells him the answer is to, “just keep…