Question mark
In the early 13th century, when the growth of communities of scholars (universities) in Paris and other major cities led to an expansion and streamlining of the book-production trade, punctuation was rationalized by assigning Alcuin's stroke-over-dot specifically to interrogatives; by this time the stroke was more sharply curved and can easily be recognized as the modern question mark.
Question authority
"Question authority" is a popular slogan often used on bumper stickers, T-shirts and as graffiti. The slogan was popularized by controversial psychologist Timothy Leary, although some people have suggested that the idea behind the slogan can be traced back to the ancient Greek philosopher Socrates. One of the most influential icons in the counterculture movement which formed in the late 1960s out of opposition to the Vietnam War's escalation, Leary gained influence among much of the youth by advocating the use of LSD – which was criminalized in the United States in 1966 – as a way to escape from the burdens of society. Following the Watergate Scandal, which resulted in the resignation of US President Richard Nixon and the conviction of several officials in the Nixon administration, the slogan became arguably the most accepted form of ideology among baby boomers.