Three working principles seem important in order to arrive at robust strategies for preserving Records, Knowledge, and Memory across generations. Namely· There is no single tool that can be relied upon to fulfill, alone, the long-term preservation task over the long time scales of interest. All tools have their weak points.· Robust strategies must rely on a combination of tools chosen to complement, re-enforce, and/or point to one another over the time scales of interest.· Robust strategies should rely both on mediated transmission (future seen as a rolling present) and on non-mediated transmission (future seen as a succession of up and downs in human comprehension and oversight)A methodology is presented that starts with the identification of tools and their tabulation vis-à-vis requisites of time duration, mediated or non-mediated transmission, and whether they help preserve R, K, and/or M. The next step in the methodology is the creation of maps based on the modes of interaction of these tools amongst themselves. The methodology can then be used to identify robust preservation strategies.