Did you even read my post? Like I said, production process can make the same materials completely different. are carbon nanotubes the same as normal carbon fiber? they are both made out of carbon, shouldn't they be the same then? Manufactures are constantly refining materials, it's true throughout almost all industries. Carbon fibers are being refined everyday. To say that carbon fibers today are the same as 10 years ago are insulting to hundreds and thousands of material engineers who are working to make materials better everyday. More refined graphites mean less shockwave and even energy distribution also more durable. How do you explain that to consumers? You come up with names like K factor! And heads' rackets do indeed contain liquid metal. No it's not liquid, it's just a process to refine the material. Apple even bought that liquid metal company to make their products more scratch resistant a while ago FYI. You seriously need to do some research before blatantly shout out "Head racquets do not contain any "Liquid Metal"".