Elizabeth Holmes founded Theranos, a health technology company that promised to revolutionize blood testing with just a drop of blood. As CEO, she raised over $900 million and Theranos was once valued at $9 billion.

However, her claims about the company's technology were later revealed to be false, leading to criminal fraud charges. Holmes' keynotes provide a cautionary tale about the dangers of hype, the importance of integrity in business, and the consequences of putting ambition over ethics.