The number 7 has been selected as the number of the year for several reasons: it represents the number of World Series wins for the Boston Red Sox, the seven deadly sins in Catholic teachings, and the seven seasons of the TV show Smallville, among other things. The article then discusses what would happen if the number 7 disappeared for a day, noting that stores like 7-Eleven would be affected and things priced at $7 would no longer be possible. Dates and times would also have to be adjusted without the number 7.