Common computer programs have a rather sharp boundary between their source code and the data. In brains (and hypothetical AIs) this distinction is (would be) probably less explicit. Whenever the baron learns anything, his source code changes in some sense, involuntarily, without recompiling. Still, the original source code contains all the information. Precommiting, in order to have some importance, should mean learning about a particular output of your own source code, rather than recompiling.