“All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others”*…
Now more than ever: Get a free logical fallacy poster.
* Douglas Adams, The Salmon of Doubt
As we dedicate ourselves to discipline, we might send carefully-calculated birthday greetings to John Wallis; he was born on this date in 1616. An English mathematician who served as chief cryptographer for Parliament and, later, the royal court, he helped develop infinitesimal calculus and is credited with introducing the symbol ∞ for infinity.