we don't have to use those as a matter of fact it wasn't designed that way initially at all the solid uh propellant rockets were a uh you know were time saving money saving afterthought
We don't have to use solid rocket propellants.
mnli hypothesis: We don't have to use solid rocket propellants. premise: we don't have to use those as a matter of fact it wasn't designed that way initially at all the solid uh propellant rockets were a uh you know were time saving money saving afterthought