[There's] a very long and well-established literature in psychology that getting groups of people together is no way to come up with ideas. Creativity is not a team sport. What you're looking for is somebody's individual, intellectual trunk to make new connections and come up with something new.
Let's imagine billions of neurons in my head communicating with stuff they've been talking about all their lives together: there's a high probability that occasionally they'll come up with something new. Let's now think of the line of communication that you and I have got between each other, which is impoverished, because we have to try and translate complex ideas into language, and how many times do you find you've got a good idea, it's almost in symbolic thought inside your head, and you really can't articulate it to someone. And when you do, they get the wrong idea, because really, language can't encapsulate it until it's fully formed. There's no good evidence that I know of that these brainstorming sessions will come up with a solution or a new idea.