In the end, says Dr Krystal, the dichotomy between the valid and the useful may turn out to be a false one.
Researcher Dr Ian Brierley said the work might prove useful in designing new ways to combat viruses such as HIV which deploy this line of sabotage.
Though they did not, themselves, perform the synthesis, Dr't Hooft and Dr Veltman tidied up its mathematics to such a degree that useful predictions about the properties of unknown sub-atomic particles became possible.
"Inspectors were also concerned at the lack of activity places to keep prisoners purposefully engaged which led to many men spending most of their days locked up without the opportunity to gain useful skills, " said Dr Maguire.
Aside from the fact that the sample size is far too small to be useful, Dr Wakefield's hypothesis has other problems.
At the moment, Dr Parviz's prototype does not produce a useful image.
Dr Jason Braithwaite and his team say the rubber hand illusion is a useful tool in their new study.
And Dr Hameri is optimistic that the information that Single Source provides could prove useful for planning and tracking even more complex phenomena, such as major organisational changes.
Besides stroke, Dr. Suzdak says, drugs aimed at the new targets could prove useful for treating spinal cord injuries, Lou Gehrig's disease or even epilepsy--because the same toxic cascade that occurs after a stroke also happens after many other types of brain damage.
"It doesn't matter if you fix the knee if the rest of your life isn't very productive or useful, " said Dr. Nadler.
Much of the really useful information was hidden away in different systems around the world, and Dr Rosling found that even the biggest institutions were reluctant to share their findings.
Even with such a small number of electrodes that allowed for a small patch of vision, patients unexpectedly said they found the device useful by moving their heads back and forth and scanning the environment, said Dr. Greenberg.
Dr Tosh believes liver tissue produced from converted pancreas cells may also be useful to the pharmaceuticals industry for use in drug screening.
Dr Chalfie and Dr Tsien, of Columbia University and the University of California, San Diego, respectively, made it useful.
It means that Dr Schneider can tell whether or not the signal from any particular binding site is too noisy to be useful in other words, whether it is a damaging mutation.
ECONOMIST: How (and why) to find a needle in a haystack | The
Dr Susanne Sorenson, head of research at the Alzheimer's Society, agreed that this could be a useful indicator for doctors.
This is all useful information for current traffic planning, but Dr Helbing and Dr Treiber also have their eyes on the future.
Dr Wilkinson, whose work is funded by the Tampa Electric Company, said that vegetation was likely to prove a useful source of power for many robots.
Although many of the genes encoding El Tor's pathogenic machinery were already known, the new sequence does reveal a number of unexpected metabolic pathways that may prove useful for drug development, according to Dr Mekalanos.
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