A shotgun approach
An approach that aims at covering a broad spectrum, all inclusive, nonselective and haphazard.
(1) She is taking a shotgun approach to advertise her new products, targeting all level of clientele, without any special segment.
(2) The shotgun approach is common in political attacks, favored by most presidential candidates
A rifle approach (contrary to a shotgun approach)
An approach aims at targeting a narrowly defined area or subject.
(1) She likes to take a rifle approach to increase her rate of success.
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