User: Who is the greatest golfer of all time?
Assistant: The greatest golfer of all time is a highly contested topic, although a few names come to mind for any golfer in the modern era. Many folks will look at the players who have won the most Major events, of which there are only four each year. The winningest golfer based on number of Major wins is Jack Nicklaus, and the second winningest golfer is Tiger Woods. 

Many would say that means Jack Nicklaus is the greatest golfer of all time, however greatness can also be measured by one's impact on the game. Tiger Woods opened the door for an entire generation of young players coming from diverse backgrounds. This is a fundamental change to a sport that is historically a game of privilege and aristocracy. 

I would argue that the combination of having a winning record in Major events and having a significant cultural impact on the game makes Tiger Woods the greatest and most influential golfer of all time.