With markets noisier and more uncertain than ever, Dimensional Fund Advisors founder David Booth goes Inside the ICE House to make the case that staying calm is not just good advice — it's backed by a century of data. He discusses his new book, Stay Calm, and why the same principles that help people navigate life's uncertainties are the ones that lead to long-term investing success. Booth challenges the allure of market timing and prediction, arguing instead for planning, patience, and trusting in human ingenuity as the engine behind decades of 10% annual stock returns. He also reflects on Dimensional's milestone crossing of $1 trillion in assets under management and why personalization may be the next major wave in investing.