Peg Tittle 
What If… [PDF ebook] 
Collected Thought Experiments in Philosophy

What If. . .Collected Thought Experiments in Philosophy is a brief collection of over 100 classic and contemporary "thought experiments, " each exploring an important philosophical argument. These thought experiments introduce students to the kind of disciplined thought required in philosophy, and awaken their intellectual curiosity. Featuring a clear and conversational writing style that doesn’t dilute the ideas, the value of the book is in its simplicity-in both format and tone. Each thought experiment is accompanied by commentary from the author that explains its importance and provides thought-provoking questions, all encapsulated on two pages.