Stephan's Tuesday Picks

• Roger Martin: What would have to be true (Medium)
• Weak business investment threatens Canadian prosperity (CD Howe Institute)
• Amazon among bidders for Signify Health (WSJ)
• Canadian agtech Vive raises $26 million as 'farmaceutical' nanotechnology wins over growers (Globe and Mail)
• Amazon's acquisition of the Roomba is dangerous (The Atlantic)