Friends: Scientists are of different kinds. Some dig deeper (and work on a single problem) and others have a broad sweep. Read Freeman J Dyson's article in the latest issue of NY Review of Books. For providing information support to scientists, one must know their research interests and the way they do science. Arun In the latest New York Review of books (dated 20 Oct 2005): http://www.nybooks.com/ Wise Man http://www.nybooks.com/articles/18350 *By Freeman J. Dyson* Great scientists come in two varieties, which Isaiah Berlin, quoting the seventh-century-BC poet Archilochus, called foxes and hedgehogs. Foxes know many tricks, hedgehogs only one. Foxes are interested in everything, and move easily from one problem to another. Science needs both hedgehogs and foxes for its healthy growth, hedgehogs to dig deep into the nature of things, foxes to explore the complicated details of our marvelous universe. Albert Einstein was a hedgehog; Richard Feynman was a fox. --- Arun