Daniel is building with LEGO and starts wondering why it feels so satisfying.

The answer turns out to involve extraordinary precision engineering, a Danish carpenter, a fire, and a near-bankruptcy that almost erased one of the most beloved toy brands in history.

LEGO started in 1932. Ole Kirk Kristiansen was a carpenter in Billund, Denmark, struggling through an economic crisis. He began making wooden toys to survive. A few years later he named the company LEGO -- from the Danish leg godt, meaning play well. Someone noticed later that lego also means I assemble in Latin. He considered it a good omen.

The plastic brick came later. Ole's son Godtfred Kirk Kristiansen developed the stud-and-tube system that gives LEGO its clutch power -- the precise grip that holds bricks together firmly while still letting a child pull them apart. ...