The reader may have noticed that the statement 'The Municipality has committed a tort against the cab-driver' was first in a grey box, and now is in a white box. This is due to the different statuses that statements can have: if a statement is unevaluated it is in a grey box, if it is undefeated (i.e., justified), it is in a white box. In the example, the statement 'The Municipality has acted against proper social conduct' is undefeated, since it has been added as an assumption. The other two statements become undefeated since there is an undefeated reason for them.
The line of argument continues in order to determine the amount of damages that the Municipality has to pay. At first, the conclusion is drawn that the municipality has the duty to repair 100% of the damages. However, the student recalls something about the importance of imputability: