Discover how 19th-century giants Oliver Wendell Holmes Sr. and Mark Twain exposed phrenology as pseudoscience. Holmes coined the term, comparing brain reading to judging a safe by its knob. Twain's personal encounter hilariously revealed phrenology's unreliability. #Phrenology #Pseudoscience #OliverWendellHolmes #MarkTwain #HistoryOfScience