It is the year 2042, and a father and his son walk the streets of lower Manhattan.

Approaching the site where the WTC used to be in the end of the 20th century, the father sighs and comments, "To think that right here used to be the Twin Towers..."

The son, not understanding, asks his father, "What are the Twin Towers?"

The father smiles, then looks at his son and explains, "The Twin Towers were two huge buildings which stood here until 2001, and then the Taliban destroyed them."

The son looks up to his father and asks, "What are the Taliban?"