Stephan's Tuesday Picks

• Roger Martin: Investment strategy and artificial intelligence (Medium)
• Did a wine-world insider swindle his Bordeaux-swilling pals (Grub Street)
• Costco is about to open sushi counters nationwide (Food & Wine)
• Using AI to identify edible mushrooms could kill you (Washington Post)
• Crafts retailer Joann goes bankrupt as consumers retreat (Bloomberg)