When considering graduate subjects for potential career paths, it is essential to focus on areas like economics, machine learning, computer science, physics, statistics, security studies, international relations, public policy, law school, biology specializations relevant to pandemic prevention, and studying emerging global powers like China, India, or Russia. While subjects such as history and philosophy are valuable, they may be more competitive and have limited backup options. Personal fit is crucial in making a decision, as being skilled in the subject increases chances of success. Consider flexibility in career options; programs that only benefit academia may limit opportunities. Opt for subjects that offer versatility, allowing transitions beyond the academic realm. For greater flexibility, certain degrees like a maths PhD can enable shifting into various fields like economics, physics, biology, or computer science, providing diverse career prospects.