Opportunities and Dumb Decisions in Tech and Business

The world has changed a lot since 1942, but new technology doesn't affect the opportunities available. What really gives people opportunities is other people doing dumb things. In the 58 years Berkshire has been running, there has been an increase in the number of people doing big dumb things. They can easily get money from others, which has led to the rise of dumb insurance companies that can make people rich.