Circumstances that weren't considered by the dispatcher or crew when the FDRA was generated.

The closure of 13/31 at LGA a few weeks ago (winds), AFTER I signed the FDRA, made us change the numbers on the FDRA. We agreed with the dispatcher to change the fuel and the enroute time. It doesn't matter that we'd signed the FDRA.

The FARs require us to pay attention and make decisions regardless of what we signed ____ minutes ago.