Arsonists have attacked France's high-speed rail network, paralyzing train travel to Paris for some 800,000 people across Europe, including athletes heading to the opening ceremony of the Olympic Games. The saboteurs targeted remote locations far from the capital with apparently coordinated attacks that sought to cut off rail routes into the city from all directions. The fires were predominantly set in pipes containing critical signaling cables for the system known as the TGV. Blazes were reported before dawn near the tracks on three separate lines, causing widespread disruptions. Another arson attempt, in the south in Vergigny, was thwarted by rail agents who scared off several suspects.

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A Bay Area column by Andy Kunz and Ezra Silk condemning Elon Musk’s promise to make “a useful humanoid robot as quickly as possible” and then …