I’m channeling my daughter’s grandfather Grizzly just now as she asks my help in understanding potential and kinetic energy. I remember asking my dad this same question so many years ago. Dad was always so excited to talk science, and he loved to make up examples and even put on a little show to illustrate a point. Though Emily will never know her grandfather, it’s nice to have a chance to speak to Emily with his voice and convey his sense of excitement for a subject he would rather bestow than the passage of any mere legacy or monetary inheritance. For what greater gift can there be than to teach a child the tools and methodology of uncovering truth.