Conversation so far:
Was Robert Todd Carroll a writer?
Robert Todd Carroll authored Becoming a Critical Thinker, a textbook for introductory logic and critical thinking courses.
What was Becoming a Critical Thinker about?
It covers subjects such as language and critical thinking, the mass media and other sources of information, fallacies of reasoning, and inductive and deductive arguments.
Did Robert Todd Carroll write anything else?
Robert Todd Carroll achieved notability by publishing The Skeptic's Dictionary online in 1994. It is the print version of the website skepdic.com.
What was Robert Todd Carroll's The Skeptic's Dictionary about?
The Skeptic's Dictionary features many examples of pseudoscientific beliefs over its eight chapters. In the last chapter, Robert Todd Carroll provided ways to improve critical thinking and skepticism.

Question: What else did he write about?
Self-contained rewrite: What else did Robert Todd Carroll write about?