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Patients who used the clinic's new follow-up app recovered more quickly than patients treated before the app existed. Both groups received the same course of medical treatment. The follow-up app is therefore speeding up patients' recovery.
Assumption to consider: The patients treated before the app existed were not recovering from more serious conditions on average. Is this an assumption on which the argument depends?
Regions that ran the energy-saving campaign saw household electricity use drop the following winter. The campaign's leaflets explained simple ways to cut consumption. The campaign caused the drop in household electricity use.
Assumption to consider: Households that reduced their electricity use saved money on their bills. Is this an assumption on which the argument depends?
Since the council added cycle lanes, the number of cyclists on the main road has grown. The council infers that the cycle lanes encouraged more people to cycle.
Assumption to consider: Cycling is a healthier way to commute than driving. Is this an assumption on which the argument depends?
Employees who attended the optional time-management workshop later met more deadlines than those who did not attend. The workshop must therefore be improving how well employees meet deadlines.
Assumption to consider: The employees who chose to attend were not already better at meeting deadlines than those who did not. Is this an assumption on which the argument depends?