Honestly, it’s hard to pick just one — but if I had to, I’d say AI diagnostics paired with genomic medicine is the one keeping me up at night in the best possible way.Think about what’s actually happening here. For basically all of human history, a doctor looked at your symptoms and made their best guess based on what worked for most people. Now we’re at this inflection point where medicine is starting to treat you — your specific DNA, your specific tumor mutation, your specific biology. That’s not incremental progress. That’s a complete philosophical shift in what medicine even is.Cancer is where you feel it most viscerally. My grandmother was told she had ‘breast cancer’ like it was one thing. Today that same diagnosis might split into 30 different molecular subtypes each with a different targeted treatment. The disease didn’t change — our ability to see it did.What scares me though — and I think we’re not talking about this enough — is who gets access. Because right now these technologies exist in elite hospitals in wealthy countries. The same innovation that could democratize medicine through a $10 smartphone diagnostic could just as easily become another thing that extends the lives of the rich while everyone else still dies of stuff we already know how to treat.That gap is the real story. And it’s the conversation we should be having….