Let me share something that’s going to make a lot of people uncomfortable. After diving deep into 40 years of market data across every major developed market, plus China for good measure, I’ve got some news that’s going to ruin the party for anyone expecting double-digit returns over the next decade.I know, I know, AI will change everything and this years-long bull market is only the beginning. I’ve heard it all too.But here’s the thing. The research is clear: starting valuations predict future returns with ...