The man on the trail went by “Mostly Harmless.” He was friendly and said he worked in tech. After he died in his tent, no one could figure out who he was.

After 20 years of long-distance competition, I ran my fastest. All it took was tech, training, and a new understanding of my life.

Scandals. Backstabbing. Resignations. Record profits. Time Bombs.

How a confused, defensive social media giant steered itself into a disaster, and how Mark Zuckerberg is trying to fix it all.