Something happens. Something else breaks. Where do you first look to fix it?
answer (c) three other places before finally checking the thing that happened.
Particularly recommended when the "happening" = digging up the pavement and the "other places" = bits of pavement not recently dug up (but adjacent).
Hopefully they have now fixed it.
Comments
See also forcing pedestrians to squeeze past the Morris Minor and onto the road, or traipse through the front garden of the alchy tramps.