Markets change, but human behaviour rarely does. The Harshad Mehta scam highlights five timeless investing lessons on due diligence, discipline, risk management and avoiding herd mentality, that can help investors make smarter financial decisions in today's stock market. Markets change, but human behaviour rarely does. The Harshad Mehta scam highlights five timeless investing lessons on due diligence, discipline, risk management and avoiding herd mentality, that can help investors make smarter financial decisions in today's stock market. by Soban News (international And National News)