This is a critical thinking textbook based on R Markdown and bookdown (https://github.com/rstudio/bookdown).
Please see the page "Get Started" at https://bookdown.org/yihui/bookdown/ for how to compile this example into HTML. You may generate a copy of the book in
bookdown::pdf_book format by calling
bookdown::render_book('index.Rmd', 'bookdown::pdf_book'). More detailed instructions are available here https://bookdown.org/yihui/bookdown/build-the-book.html.