Miss Congeniality

Let us consider the assumed symmetries:

Obama's inexperience =~ Palin's inexperience

Biden's experience (6 terms in Senate; worst vices: likes to talk too much and has sense of humor) =~ McCain's experience (4 terms in Senate, worst vices: violent temper and see-no-evil, hear-no-evil relation to lobbyist buddies -- poster-child for enlightening & ennobling effects of torture applied long, long ago.)

Let us consider the putative symmetry:

Obama chooses Biden as his Vice President, at worst admitting that he might need more seasoned advice in an international crisis, and responsibly providing Americans with assurance should something happen to him.

McCain chooses Palin as his Vice President, implicitly claiming he already knows everything there is to know about life and death, peace and war, health and the economy, and is entitled to show a big "FU" to everyone else in his choice of Vice President.

Whose temperament and judgment do you want to trust in the White House?

Personally, I don't see any symmetry at all.

Let us consider the assumed symmetries:

Obama's inexperience =~ Palin's inexperience

Biden's experience (6 terms in Senate; worst vices: likes to talk too much and has sense of humor) =~ McCain's experience (4 terms in Senate, worst vices: violent temper and see-no-evil, hear-no-evil relation to lobbyist buddies -- poster-child for enlightening & ennobling effects of torture applied long, long ago.)

Let us consider the putative symmetry:

Obama chooses Biden as his Vice President, at worst admitting that he might need more seasoned advice in an international crisis, and responsibly providing Americans with assurance should something happen to him.

McCain chooses Palin as his Vice President, implicitly claiming he already knows everything there is to know about life and death, peace and war, health and the economy, and is entitled to show a big "FU" to everyone else in his choice of Vice President.

Whose temperament and judgment do you want to trust in the White House?

Personally, I don't see any symmetry at all.