Ginsberg Replies to Chapman and Schoppers

Rather than begin by discussing the points where I seem to be in disagreement with Chapman and Schoppers, let me start with something about which we seem to concur: The work on reactive plans can be broken into two parts. First is the work on pure reac-tive plans, which specify actions for an agent to take in all situations. Second is the work on caching reactive plans, which specify actions in only some instances and are primarily used to store the results of previous planning activ-ity. Although Chapman would object to the use of the word plan, the basic distinction is one that his reply appears to sanction.