Sims had Langdon drugged, which brought on the amnesia and hallucinations, so he would be prone to supporting Brooks. Langdon had originally become associated with Inferno throughout the WHO. Zobrist wished the WHO to sanction mass sterilization, which they rejected, and when he died WHO agents uncovered his handheld projector. https://cesaruyacv.bloggactif.com/28804920/the-greatest-guide-to-illumination-foundation