This requires that they effectively reverse-engineer the well-documented al-Qaeda plot to bring down the Twin Towers.
This is a well-documented phenomenon which does not worry specialists.
It's a well-documented fact that most celebrities worth their salt have some tragic narrative running through their lives.
early 15c., "teaching, instruction," from Old French document (13c.) "lesson, written evidence," from Latin documentum "example, proof, lesson," in Medieval Latin "official written instrument," from docere "to show, teach" (see doctor (n.)). Meaning "something written that provides proof or evidence" is from early 18c. Related: Documents.
1640s, "to teach;" see document (n.). Meaning "to support by documentary evidence" is from 1711. Related: Documented; documenting.