Critical Thinking: What Is It Good For? (In Fact, What Is It?)(csicop.org)
csicop.org
Critical Thinking: What Is It Good For? (In Fact, What Is It?)
http://www.csicop.org/si/show/critical_thinking_what_is_it_good_for_in_fact_what_is_it/
http://www.csicop.org/si/show/critical_thinking_what_is_it_good_for_in_fact_what_is_it/
It's known as a "Call To Action". Without such a call to action, many people will not know what to do after reading a direct mail offer letter.