Wikipedia puts it this way:
a group creativity technique designed to
generate a large number of ideas for the solution of a problem.
The method was first popularized in the late 1930s by Alex
Faickney Osborn in a book called Applied Imagination.
Osborn proposed that groups could double their creative output
Basically, brainstorming is an idea generation
tool that writers can use, either on their own or with others in
order to come up with the largest number of possible ideas for a
piece of writing. The most important step, however, is the
“culling” of ideas that happens after successfully generating
them. Not all ideas are equal, nor are they all useful.
And that’s the most difficult task of all:
evaluation. As a teacher with 25 years of experience, I still find
it a challenge to fairly and equitably assess the quality of a
student’s ideas. But practice does make one better, so I encourage
you to brainstorm and then evaluate and assess your ideas. Each
time will be a little easier, a little more useful. Good luck!
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