4 all the shit talking people do bout Jay, he probaley one of the best Mcs in the game (at least mainstream) to do it over the past almost 10 years. Besides I dont see how it could be hard at all, he spits a bunch of shit, they listen, take/chop up what sounds good what sounds bad, and there you go and entire song. Not that hard to believe. I know people who freestyle round here, cant write a damn thing down cuz they suck, but can/will freestyle legit off the dome a bunch of shit dealing with a simlar topic, might not make sense at all, but once the producer/mixer gets to that shit and does what he do, then you have a complete sounding song, Ive seen people do it might not be exactlly how jigga does it but to think that if he did Roc La Familla (songs like Cant be life) and Blueprint (songs like Never Change, Rulers Back) like that? I mean shit how much blind hate can a person give?
This theory might also explain the whole "jay-z bites rhymes" shit, if he freestyling and shit just comes to his head and sounds tight, of course he going use it. every freestyler does that shit