Sport is the last public religion that still nails a number to the wall and forbids you to wear it. Forty-two is the loudest of those relics: not because it wins games, but because someone decided it had already won enough.
Baseball made the obvious move. One jersey, one April, then a league-wide retirement so complete that even the last man allowed to keep it — a closer who treated the ninth inning like a small, well-lit temple — had to hang it up. After that, 42 is not a choice. It is a plaque. Tourists photograph it the way they photograph locked doors.
Look past that and the math stays arbitrary, which is the point. A marathon is 42.195 kilometres because a 1908 course from Windsor Castle to the White City stadium needed a royal box and a finishing straight, and nobody has successfully unpicked the extra 195 metres since. The distance is a fossil of seating charts. Runners still treat it as law.
Stadiums do this constantly. They are temples of sacred leftovers: 42 rows that were never counted twice, a 42-yard hash that survived a redesign, a club-seat section numbered because the architect liked primes. Superstition fills the rest. Players skip 13, hoard 7, refuse to step on the line. Forty-two sits in a stranger category — too retired to be lucky, too famous to be unlucky, hovering like a towel you are not allowed to sit on.
Elsewhere the number still plays. American football keeps a few 42s in circulation until a franchise decides the wearer was enough of a saint. Basketball retires it in patches, city by city, as if holiness were municipal. Cricket, being English, mostly ignores the whole business and bowls another over.
The Guide’s advice is the same as for any other shrine: do not panic, do not demand a refund on the extra 195 metres, and if you find a 42 still hanging in a locker, assume it is waiting for a committee. Know where your own number is. The stands will invent a reason it was always holy.