Network theory can give a useful overview of how a biological system works. But to make testable predictions, we need the details. The exhilarating progress of the past decade has brought an unprecedented wealth of quantitative information on livingsystems, from genomic sequences to protein structures and beyond. But although technical advances make data collection ever easier, investigators are increasingly concerned by their inability to gain a bigger picture. How can this growing mountain of facts be assimilated, and where will the new ideas come from that will help us gain a broader perspective?
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