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While public education and expert testimony are always valuable , advocacy ultimately will not be effective unless it is embodied in law . Intervention is always valuable , but the responses to intervention that occur in the early years are relatively more robust than those that occur later . In this case , the goal is to get the relatively rare , but scientifically valuable brighter quasars because they can be followed up in high-resolution studies , and because they allow us to explore the high-luminosity end of the luminosity function . We believe a visually rich website will be both aesthetically and intellectually valuable , providing complementary opportunities to " see " the history documented by texts , and to extend our understanding of the work of women in social movements . Your comment invites the inference that some proportion of guru-clutter is always valuable , but the inexperienced team pre-emptively takes it out , at the cost of paying some other guru to put it back later . If I never did another explicit bit of work on Flow I think it would be already valuable , as it gives some language and some way of motivating designers . Techniques for reducing the cost of systems are always valuable , but they are especially valuable for digital preservation systems . Romanticism is key to the genesis of Judith Richardson 's narrative , for , as she explains , although there would have been a proliferation of ghost stories in the Hudson River Valley without the impact of that movement early in the nineteenth century , it made what she calls hauntings " eminently valuable , [ and ] fueled the elevation of hauntedness to a regional aesthetic and encouraged the proliferation of local tales " ( p. 39 ) .