Cambridge Analytica claimed that it could sway elections thanks to the devastating power of psychometric profiling, and they may have even believed it, but those claims should be read with a critical eye, because they're marketing hype aimed at people whom Cambridge Analytica was pitching as client; and because Cambridge Analytica is not a scientific enterprise, but a secretive corporation whose researchers never had to subject their experiments and results to critical, peer-reviewed scrutiny, opening up endless possibilities for self-deception and truth-shading. (more…)