Many individuals, cultures and religions object or have objected to Friday or to the number 13. Christianity objects equally to both. Friday is frowned upon because Christ was crucified on a Friday, and 13 is disliked in accordance with the number of men attending the Last Supper. The fear of a day or number may invoke inaction or paranoia in the life of an individual.
A 1986 survey reveals 41% of people in the UK feel uncomfortable about Friday the 13th, while 4% live in absolute dread of its arrival.