The effort of wildly guessing that the specific agreement as it is done in writing and it is crucial that everyone upholds their agreements, was in fact just a random test by a lunatic?

Where is this leading: "Yeah boss, so you said the electrical wiring needs to withstand 16A at 230 V, but i thought this was just a test of yours to see our cost cutting entrepreneurship and i installed wiring for 12 V and safed the cost on the circuit breaker. Anyways we need three firetrucks, two ambulances and a hearse.