Eliezer Yudkowsky is, with Nick Bostrom, one of the cofounders of value alignment theory. He is the founder of the Machine Intelligence Research Institute. He is the inventor of [ timeless decision theory] and [ extrapolated volition], the co-inventor with Marcello Herreshoff of the [ tiling agents problem] that kicked off the study of Vingean reflection, and so on and so on. His specializations include [ logical decision theory], [ naturalistic reflection], and [adversarial_AI_safety_analysis pinpointing the failure modes] in design proposals for advanced AIs.