Is the "Earthscraper" a genuinely feasible innovation or a pretty but impractical pipe dream?
One western financier recalls wearily his taste for grandiose but impractical investment projects.
While Schmidt seemed serious with his proposal of name-changing, such lengths are not only impractical but impossible.
But video is impractical in continuous-action sports like football, where officials must stop play to use it.
The secondary headteachers union suggests the curriculum is in theory a good idea but in many ways impractical.
But what was then impractical has become possible with today's robots.
Various accreditation schemes had started, but it would be impractical to set up an over-arching one for all gap years, such was the diversity of young people's activities.
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Nuclear fuel byproducts can, in some cases, be turned into materials that can be used for weapons, but this has been made very impractical by design.
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The aim is not to engineer outcomes -- that would be both impractical and inappropriate -- but simply to keep tabs on what is going on and, if events warrant, urge action or calm.
But GLP-1 turned out to be an impractical medicine, as it degrades quickly once injected into the body.
The company's first ruggedized underwater cam was a solid snapper, but its bulky submarine-like design made it impractical for most surface-based shoots.
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He could delay change (France got its first supermarket only in 1957), but his proposals for action were few and mostly impractical.
But critics called his plans for a united Africa impractical, and he lost his bid for a second term as AU chairman in 2010.
Drug companies, including insulin maker Eli Lilly, thought so, too, but GLP-1 turned out to be an impractical medicine: Once injected into the body, it degrades quickly.
But the devices themselves are still way too small and impractical.
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But even within the Tory party this proposal was widely regarded as impractical and out of touch.
The radome would not have impacted the height, but would have provided an additional design element, which ultimately proved impractical, Hayes told CNN.
But he says a set four-day working week would be "impractical" for businesses like high street convenience stores or plumbers, who are expected to be on hand whatever the day.
But the U.S. EPA has rejected that idea, calling it impractical and difficult to en-force.
But the U.S. EPA has rejected that idea, calling it impractical and difficult to enforce.
"This is the week that they say there has to be some progress and I'm hopeful that we can make progress, but I have to say that it is imperative that Republicans get off this extraordinarily impractical and unsuppportable demand for tax breaks, " the South Dakota Democrat said.
But that approach wouldn't work in a global program, since it's usually impractical for students to travel great distances that often.
The opponents include the prominent Swiss-based (but Russia-linked) Trans World Group, which says that a ban on tolling is impractical, because Russian firms cannot be sure of always having the hard currency to pay for the continuous supply of imported ore they need.
But Apple faces unprecedented competition in the space and may argue that screen technology that would have made a smaller iPad impractical before is now available.
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