Dear P.Harry.
Cavemen where right to be afraid of lightnings even don´t understanding them...(that´s a proof of ancient wisdom, lightnings hurt and can kill..)
Woketman is right to be afraid of work... (another proof of ancient wisdom, work sometimes can be worse than lightnings)
And ET about pulsejets.. (wisdom in not getting deaf, burned and outperformed by a young kid flying a ARF prop job)

Enrique