copyright avoiding , I presume <| sep |> The fact you feel the need to waste a paragraph on my pointless posts suggests you are incorrect . Joke ' s on you , my time has negative networth . Wasting it on this is actually making me a better person . Cunt . Edit I think that evened it out . Who ' s irate ? Can fruit even hang that low ? <| sep |> The whole point of it is that fuel is cheaper than a new booster . Having the booster back on the ground means that it can be given a onceover by a group of technicians , refueled , and used for another launch . <| sep |> only 100 kgnow I feel bad <| sep |> One can hold that all truths are theoretically knowable and also hold that certain truths never were and never will be known . It depends on what you mean by knowable , and this paradox seems to hinge on an equivocation between how it defines knowable in the premise and the conclusion .