In every process there needs to be a box marked other.
Unpredictable things happen, but you can have a process for handling kinds of unexpected things.
An emergency kit.
A library of partial plans and resources.
Don’t just call it random and wait for it to happen before picking up the pieces, and pulling together a solution.
The last stage of the “other” process is to ask “Why was this not covered by the normal process?“¶