I am just not completely convinced that the Klingons are purely a Norse/Japanese Samurai culture. It does appear that way in Enterprise and the TNG but not the case in the TOS. This leaves me with the view that there are cycles in the Empire in which a more USSR reasonable and pragmatic approach/attitude towards science and engineering was taken.
We may have even seen the ill effects of a conservative warrior culture taking its tool on the empire where in they seems dominated by petty rivalries and the consumption of blood wine.
One got the impression the Klingons like Worf might represent a counter cultural movement back towards an appreciation of science and reason while maintaining an respect for the cultural past.