20. Hierarchy New Idea Good Bad Accepts (1-p) Rejects p Accepts p Rejects (1-p) Willie Evaluates Accepts p∙q Rejects p(1-q) Rejects (1-p) Gladys Evaluates Willie’s Recommendations Accepts (1-p)(1-q) Rejects (1-p)q Rejects p
21. Flat New Idea Good Bad Accepts (1-p) Rejects p Accepts p Rejects (1-p) Gladys or Willie Evaluates