In aviation it is usually considered a promotion to move from copilot to pilot , a pilot has often been a copilot for a while to build up his flight hours .
In orchestras the first violin is generally ranked ahead of the second violin in skill , in ranching the top hand is usually a guy that was just a ranch hand for a while until his skill and strength were proven.
In flocks of birds there may be a leader , it will be the bird that has flown the route before.
In the Case of McCain a highly experienced leader , who has led in several fields , has chosen an understudy with less experience than himself but more experience than some Presidents of the past have had. I see little to apologise for.
Barak Obama on the other hand , is running on the strength of his change agenda and his low experience level seems a natural consequence of his being uncorrupted by the Washington mode of behavior .At this point , he isn't seasoned because he isn't spoiled. Change is Obama's game , so it isn't bad that he comes with such little experienced in compromise and corruption.
But it is hard to match this with the choice of Veep ,Biden is a Wonk among wonks , his experience in Washington qualifies him better than anyone to deal with it in the way it works right now , he one of the authors of its present condition.
Did Barak Obama choose someone who could replace him in a tragic circumstance , and bring his change agenda to fruition , or someone who could serve as his guide in the unfamiliar halls of power?
Seems as if the danger here is that Biden will serve as the puppetmaster as much as a guide and kabosh attempts at change whether he ever takes the reigns himself or not.