Elena would have been 27 today. Also, why sneakers squeak, turning roads to pedestrian paths, the searchable Whole Earth, how two spies close cities, Maggie's link to why you should be licking your cat, and Matt's TaskGate.

On disappearing as I age.

Why don't my devices notice me? Also, A day in the life of someone who makes things worse, Asha aims to be a functional old lady, notes from the naysayers club, Maggie's link to an amazing Geo guesser, and thoughts on Mac software making the same pivot as Mac hardware.

On ingredients that get you started in a new direction.