This would've been obvious to our ancestors, but not all pornography is nudity, or even visual. Even the word reflects this, "pórnos" (fornicators) + "gráphein"

This would've been obvious to our ancestors, but not all pornography is nudity, or even visual. Even the word reflects this, "pórnos" (fornicators) + "gráphein" (writing, recording, or description). Anyone who wants to learn what women's porn looks like needs to look at the sales numbers for Fifty Shades of Gray.