A recent conversation I had at the grocery store prompted this column. I believe that conversation certified the need and my obligation to your grandchildren–I don’t have any grandchildren-- to share this important survival knowledge. To assume we will always be able to buy everything we need at a local air-conditioned fancy grocery store is assuming a lot. Those of us who still remember how to do some things our parents and grandparents taught us need to share it. Some of the reasons our early schools were so successful is that older students taught the younger ones.