My dad made a little flip book to show me how internal combustion worked. When he fanned a dozen pages, I saw a little movie of a piston, connecting rod and crankshaft moving in the familiar reciprocating pattern. Keith was an engineer and probably enjoyed giving me the lesson. I later became an engineer too.
Internal combustion has enjoyed a daft, glorious, whimsical and murderous hundred-plus years of technology dominance. Yet, consider the quirkiness of it; the improbability that cars & motorcycles (& boats & airplanes) would be propelled by a noisy, ripple-fire of EXPLOSIONS: “Bang…..bang…..bang….. (“Faster”) bang,bang,bang,bang,bang….. (“Pin it!”) bababababababababababababbang!”
Consider further: FERMENTED DINOSAURS provide the gunpowder!
We’re so familiar with all this that we forget that it’s completely nutty!