Agreed. Often you have to already know what he&#x27;s talking about to get meaning from his words.<p>For example, his description of the Saturn V Rocket (he replaced rocket with &#x27;up goer&#x27;) has this description of hydrogen: &quot;The kind of air that once burned a big sky bag and people died (And someone said &quot;Oh the [humans]!&quot;)<p>I guess that&#x27;s amusing if you already know about the Hindenburg, or something.<p>Also, speaking of the propellant used for the Saturn V&#x27;s F-1 engine he states: &quot;This is full of that stuff they burned in lights before houses had power&quot;. The propellant in the F-1 engine was RP-1 (kerosene). I assume he was talking about &#x27;town gas&#x27; for lighting.