What does the total 28 blocks represent in Feynman's lecture on energy represent?

In Feynman's lecture on energy, the total of 28 blocks represents the various ways energy can be quantified and understood in different contexts, such as kinetic energy, potential energy, and thermal energy. Each block symbolizes a distinct aspect or form of energy, illustrating the complexity and interconnectedness of energy in physical systems. This visual representation helps to emphasize the concept that energy can be transformed and transferred but is always conserved in a closed system.