Feynmann: "It is whether or not the theory gives predictions that agree with experiment. It is not a question of whether a theory is philosophically delightful,

Feynmann: "It is whether or not the theory gives predictions that agree with experiment. It is not a question of whether a theory is philosophically delightful, or easy to understand, or perfectly reasonable from the point of view of common sense" Then proceeds to invent string theory. Don't get me wrong, I have a lot of admiration for Feynmann,but if he did indeed say the above, that strikes me as rather inconsistent : string theory is exactly what he preaches not to do : widely successful because of how beautiful it is, but unfalsifiable (as of yet).