premise: Crist (Old English for "Christ"), is the title given to a triad of Old English religious poems in the Exeter Book comprising a total of 1664 lines and dealing with Christ's Advent, Ascension and Last Judgment. It was originally thought to be one piece completed by a single author, but the poem is now broken up into three parts:
hypothesis: Crist has an even number of lines.
reason: Crist has 1664 lines. The system was confused by the number.