When is “machines need maintenance” not a demonstrated specific cause of the stoppage?

Supplementary Practice 14: Scarcity, Evidential Scope and Rhetorical Precision in Public Communication

• When plural wording alone identifies this particular fault
• When an imperfect automatically makes a specific causal claim
• When it is merely general and not shown to explain this interruption
• When being declarative automatically establishes the cause of this stoppage