Stephan's Thursday Picks

• For retailers, unlocking the mysteries of cost (BCG)
• The hottest beer in America doesn't have alcohol (WSJ)
• Roger Martin on the relevance of management models (Roland Berger)
• Ottawa's bid to woo a foreign grocer is a nothingburger (Globe and Mail)
• Costco's longtime finance chief and its 'voice to Wall Street' is stepping down (WSJ)