Every four or five years, depending on the whim of Michael Eavis, the Glastonbury festival has a fallow year - in which none of the usual mud-soaked festivities take place to allow the Worthy Farm grass to regrow.
Handily, a by-product of leaving the Pyramid stage trussing in its packaging for an extra year is that Glastonbury's organisers enjoy an extra year to secure the full line-up of artists, ranging from the headlining global superstars to the local bands playing their first festivals.
In those scenarios, there's a tangible benefit to enjoying a year off. While a company relying on everyday business would struggle to face a year out of the game to regroup and reassess, a one-off event - or series thereof - may have the grounds to do so, if its other ducks remain in line.