Introduction: Factor-based investing: How and why does it work? Computers in the financial world: Deus ex machina or a tool of humankind? A personal path to the quantitative method. The pinnacle of investment: Factor-based investing (FBI). Risk management in a world without interest. The bottom line: “It’s not witchcraft, just higher mathematics”. Appendix: Introduction to factor investing theory. Factor-based investing for the field of pensions. PowerShares by Invesco: ETF pioneers in factor strategies. Glossary. The interview subjects. The editors.