Why would one shoelace break before the other?
Aren’t they meant to live and die as one?
Were there unseen stresses we did not expect?
Biases in usage we could not predict?
Underlying weaknesses we failed to diagnose?
At what point did all this become clear?
Was it already too late by then to turn things around?
And what is one shoe to do now that the other is gone?
Limp?