Bill & Melinda Gates Foundation charitable work. In the case of Bill and Melinda Gates, the work referenced was that of this foundation. In April 2010, Gates was invited to visit and speak at the Massachusetts Institute of Technology where he asked the students to take on the hard problems of the world in their futures. He also explained the nature and philosophy of his philanthropic endeavors. In 2010, the foundation's founders started the Commission on Education of Health Professionals for the 21st Century, entitled "Transforming education to strengthen health systems in an interdependent world." A 2011 survey of grantees found that many believed the
Bill Gates retail version of Microsoft Windows on November 20, 1985. In August of the following year, the company struck a deal with IBM to develop a separate operating system called OS/2. Although the two companies successfully developed the first version of the new system, the partnership deteriorated due to mounting creative differences. From Microsoft's founding in 1975 until 2006, Gates had primary responsibility for the company's product strategy. He gained a reputation for being distant from others; as early as 1981 an industry executive complained in public that "Gates is notorious for not being reachable by phone and for not returning