you are to understand that those whose businesses fold up did try hard enough, and those who ended up investing in a bad portfolio did do their thorough research. This means everything worth pursuing whether it's starting a business or investing in the stock market has a 100% odd of succeeding or failing. Luck is what happens when it succeeds and risk is what happens when it doesn't.
A lot of...
A Russian mathematician has introduced a powerful new approach to one of mathematics’ most enduring challenges—a class of equations that has resisted a universal solution for nearly two...