Brainstorming is a form of group activity , in which members of the group will gather and combine their brain power to solve a certain problem or generate a unique idea.
In general, brainstorming tend to be more efficient in group problem solving. Even if the members point out an idea that is not necessarily good, other people could potentially pick up that idea and adjust it into a better one.
During the brainstorming process, the members will be allowed to point out every small ideas that came up in their head. They do not have necessarily to worry about the complex application of the idea. That part will come later with the help of other members.
It's a good principle, but not something that can be enforced through government policy. Especially since anyone can call you intolerant if you simply disagree with them.
