Mayor Taylor and Councillor Simón are arguing about a new courthouse being built in Roseville in 1992. To ensure that we can find a point at issue where the two speakers disagree, it's essential that we fully understand each of their arguments. If we don't read carefully, we risk missing an important point, or reading in something that's not actually there.

Mayor Taylor concludes that Roseville would have saved money by building the courthouse in 1982, when it first would have helped to reduce overcrowding. This is because in 1982, the courthouse would have cost $26 million, whereas in 1992, it costs $30 million. Mayor Taylor's argument doesn't consider any additional factors, just the difference in construction cost between 1982 and 1992.

Councillor Simón concludes that Roseville has actually saved money by not building the courthouse earlier. Councillor Simón gives two reasons. First, after accounting for inflation, the $26 million construction cost in 1982 actually amounts to $37 million in 1992 dollars. Second, Roseville has saved money by not having to maintain a courthouse that would have been under-used for ten years. Councillor Simón's argument relies on the inflation-adjusted difference in construction cost and the maintenance cost that building the courthouse earlier would have incurred.

The most obvious disagreement between Mayor Taylor and Councillor Simón is whether Roseville financially benefited from delaying the construction of the courthouse until 1992. Mayor Taylor says no, whereas Councillor Simón says yes. But there's also another, subtler disagreement: whether the courthouse would have truly been worth building in 1982. Mayor Taylor says yes, it would have relieved overcrowding, whereas Councillor Simón says no, it would have been under-used.

The correct answer could identify either of those disagreements, or something even less obvious that we haven't spotted. The best way to check is to identify whether each speaker agrees, disagrees, or neither with any possible answer choice. The answer choice will only be correct if one speaker actively agrees and the other actively disagrees.