For 10 points, name this American pragmatist who wrote "How to Make Our Ideas Clear."
This thinker used the term "ampliative" for arguments whose conclusions go beyond their premises. His namesake law states that for two premises P and Q, if the statement "if P then Q" implies P, then P must be true. He defined the real as the object represented in the truth, which is the opinion "agreed to by all who investigate." He called the world as interpreted by senses the phaneron, and set the triad of sign, object, and interpretant as the adicity of Thirdness, which was developed along with Secondness and Firstness in his essay "On a New List of Categories." He argued that the best of four methods for settling opinion was the scientific method, in an article for Popular Science Monthly called "The Fixation of Belief". For 10 points, name this American pragmatist who wrote "How to Make Our Ideas Clear."
This thinker used the term "ampliative" for arguments whose conclusions go beyond their premises.
Charles Sanders Peirce (\"purse\")