The P.I.G. series began with the publication of The Politically Incorrect Guide to Science, by Tom Bethell. Bethell's original thesis was that "Liberals have hijacked science for long enough. Now it's our turn." Once the egregious error in Bethell's thesis was brought to his attention, he corrected it to read "Liberals have hijacked pseudoscience for long enough. Now it's our turn." Subsequent printings have eliminated the error.