You are likely to forget your old address once you have learned your new one because of interference.

Because of retroactive interference. It is a wonder that happens when recently learned data meddles with and hinders the review of already learned data. 
It is an aftereffect of a diminished review of the essential considered capacities because of the learning and review of succeeding capacities. RI is an exemplary worldview that was first formally named by Muller.

D. providing for public safety