Every time I encounter a need to provide an impact statement or when I read for-impact studies, I get an ick because ‘impact’ and ‘science’ are barely related and often contradict each other. You can make a lot of impact without science. You can do science without any impact. Moreover, if you are doing science for impact, you are not doing science at all. Focus on the impact changes the subject from understanding to manipulation and, most importantly, compromises the method, which is a core of science.