News Finding: Scientists tend to do conservative experiments. Good for their careers, less good for science. 
Paper Finding: Despite these limitations, our model reveals patterns of discovery in biomedical chemistry and shows that more efficient discovery strategies would incorporate more "interdisciplinarity" and more risk, with the latter particularly important as a field matures.
News Context: Scientists tend to do conservative experiments. Good for their careers, less good for science. 
Paper Context: { Future models could introduce these layers as additional features, penalties, and rewards associated with the "game" of science. Despite these limitations, our model reveals patterns of discovery in biomedical chemistry and shows that more efficient discovery strategies would incorporate more "interdisciplinarity" and more risk, with the latter particularly important as a field matures. Adopting a more efficient approach would lead to greater risk, but our findings suggest that scientists pursue progressively less risk, focusing more and more on the immediate neighborhood of high-degree chemicals, with the slight increase in bridging links as a silver lining.