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" Along with establishing and growing markets for water purification , such as drinking water and pools , relatively new uses of silver-based biocides for water treatment are expected . In modern terms , the idea that the human economy needs to be , and can be , studied in this way is a relatively new one . Though the field of software process modeling with system dynamics is relatively new , much is happening in conjunction with other process improvement initiatives . Hybrid coupon / checks are a relatively new innovation in marketing . The United States , both because we are a relatively new nation and because of the open nature of our society , has always tracked casualties pretty well .