It is not difficult to grasp the notion that Rainbow Dash has very little in the ways of scientific or thaumatic knowledge. But, sadly, that doesn't stop her from having ideas. It especially doesn't stop her having ideas that are based on the assumption that she does have some amount of scientific or thaumatic knowledge.
In short: try not to be within ten miles of Rainbow Dash when she has ideas.
Cover art (and story inspiration) courtesy of Irusu.