For the first seven episodes of this series, we've built an understanding of explosions based almost exclusively on records of their radius over time. In this final episode we describe explosions from different perspectives. We first discuss alternative kinematic perspectives, like the ones offered by tracking the front speed over time, or the speed at various distances from ground zero. We then give an example of representation including a mechanical variable: the pressure measured at various distances from ground zero. Overall, we show that the choice of kinematic or mechanical perspective changes the geometry of the domain of explosions, but does not seem to change its topology. The regimes, the units and the base are still given by the four mechanical parameters: the energy of the explosion, the ejected mass, and the density and pressure of the ambient medium. This kinship between mechanical and kinematic variables allows to translate pressure to radius measurements and vice-versa, concluding this introduction to the profound connections between mechanics, kinematics, geometry and arithmetic.