Mr. Hurd holds deep knowledge of H-P's operations that could prove useful at Oracle.

WSJ: H-P Sues Hurd After Oracle Appointment

We think positively about the actor because he played a hero, or the actress because she was made up to look incredibly beautiful, and assume that they therefore have deep knowledge about car engines or anti-wrinkle cream.

ECONOMIST: Idea

Before we can begin to play with any technology in this low-tech way, a fairly deep knowledge base needs to be in place (think about how much we needed to know about computers before real hackers could be born).

FORBES: The Future of Power: The Low-Tech Solution To Our High-Energy Problem

These leaders work in the fast-moving world of IT, and only with a deep knowledge of and curiosity about technology can they stay abreast of developments in the field.

FORBES: Successful Chief Information Officers Speak the Language of Business: Finance

Moreover, developing countries lack the necessary capabilities, including in terms of knowledge and skills, to handle land-based deep-sea research, with the notable exception of molecular biology techniques, which have become increasingly available worldwide.

UNESCO: MEDIA SERVICES

Instead, Senkut offers the SVSC a deep knowledge of the more timeless skills related to building a start-up.

FORBES: Aydin Senkut's Voyage from Turkey to the Heart of Silicon Valley

One colleague who worked closely with Mr. Thompson at PayPal said he was a "hard-working and detail-oriented" manager who peppered subordinates with questions to show his deep knowledge of their affairs.

WSJ: R��sum�� Trips Up New Yahoo Chief

Having studied for five years under top Chinese professors, he now co-writes learned papers on Eastern medicine in Mandarin, drawing on a deep knowledge of ancient Chinese philosophy and cosmology.

ECONOMIST: The Greeks and the Chinese

And if dead and decomposing bodies aren't your thing you can test your knowledge of the rules of taxonomic nomenclature by suggesting new names for five species of deep-sea worm, recently discovered around hydrothermal vents off Antarctica.

BBC: Forensic science uncovered