Brainstorming technique involves, a group of people usually between five and ten sitting around a table, generating ideas in the form of free association. This generated a variety of solutions that can be later analyzed and the unpractical solutions discarded. The idea is to have as many ideas generated as possible and no idea is criticized no matter how absurd it sounds and no evaluation of any idea is made until the end of the discussion. This encourages free-wheeling and one idea sometimes generates – another. This free association and unrestricted thinking may generate some novel idea and a unique solution which was not thought of before.