So, my master barrister-wizard with a CHA 18 and INT 18 will now have his major life's work, at which he is generally reckoned an expert, depend on MY skills? Me, who gets tongue-tied with girls, who loses his temper and forgets his talking points, who either thinks faster than he speaks and whips around on tangents, or speaks faster than he thinks, and makes poor arguments? If *I* argue poorly, Phoenix Wright, Ace Elven Attorney argues poorly?
But Lardass Jones who trips on stairs and gets winded walking to his car has mechanical support for playing his lesbian stripper ninja who can jump through flaming hoops while throwing daggers and can run a marathon without breaking a sweat? Old Crying Charlie who bursts into tears when a mosquito bites him and gets light-headed when cutting steak can play a steely-eyed barbarian who fights on while hundreds of arrows are in him? Why do THEY get to casually ignore their limitations when the role-play, but I'm penalized when *I* want to?
I say ban-worthy things to GMs who casually ignore their players' physical limitations by using game mechanics but ruthlessly enforce my social limitations by declaring social game mechanics as "roll playing, not role playing"
Well, at my table, that is certainly close to the case and I'll stick with it. But that is not to say that your character is limited by your skills.
a) I am neither a jury nor an attorney. if you're giving a speech, you don't have to impress the UN. Just me. Another lame geek.
b) I don't ignore your character's skill. I take it into account. If your character is alarmingly clever and charismatic, then by all means, make the roll. And if you roll well, I will certainly consider that whatever you are about to say is as convincing and appropriate as it can be.
c) but that doesn't exempt you from roleplaying either. Because it is a roleplaying game. it's not a sport, so your ninja stripper can do whaetver she wants you your fat douchebag friend doesn't need a lick of skill. Nor does your friend's fake barbarien need to be a warrior, because it's not okay for him to swing a blow up axe around my living room. You, however, are playing a character who's primary skill is talking and it just so happens that talking in character is the reason for the game. it gets special treatment because it's the focus of the game.
the focus of nascar is driving, so it gets special focus. I don't care if a nascar driver can also paint, because all he needs to do today is drive. And all any player in my game needs to do to be doing things right is behave in character.
At my table, your stats and dice rolls matter (and if your character is very smart, I'll give you a lot of information before you start talking) but if you get up in front of a jury and give them the chewbacca defense, then no force on earth can give you stats high enough to get beyond that. That doesn't mean that you can't play that concept, but it does mean that you need to be at least of average intelligence to do it well.