Markets rise and fall not just on cash flows and discount rates, but on the beliefs of investors. For 70 years, the Value Line Investment Survey has quietly compiled long-term earnings forecasts and price targets for thousands of companies.That trove of forward-looking expectations and beliefs gives us a rare window into what sophisticated analysts were thinking across multiple market cycles.A recent study by MIT's David Thesmar and Emil Verner digs into this data and compares it with surveys of individual ...