Energy, AI, Healthcare: none of these are problems. They are all ways to solve problems, or at best domains that constrain thinking. Energy is a field/domain,

Energy, AI, Healthcare: none of these are problems. They are all ways to solve problems, or at best domains that constrain thinking. Energy is a field/domain, there are problems you can solve here, but they could tend towards optimization or soln looking for problems AI is overloaded, but again is more tool than problem. Healthcare the same, very wide, not often problem fixing. an interesting observation is find where domains intersect. this allows you to focus on an area where few have/are venturing. giving you a rich seam to mine, and ROI on your time. as always choose your own adventure, who are we to say what is 'right'. good luck!