In a world dominated by unknown and unmanageable cash flows on a daily basis the fund manager must make many trades to exactly replicate the index.
But to achieve this, tech companies must encourage users to make a leap into an unknown world and throw private information into a void.
"Russians are not used to encountering disabled people in the street ... yet for the first time, they discovered a previously unknown sporting world and its courageous fighters, " the paper said.
As Donald Rumsfeld might have put it, they have left a world of known unknowns for a twilight landscape of unknown unknowns.
In late June 1942, Eisenhower arrived in London as a virtual unknown to the world.
Gascoigne went into the 1990 World Cup as a relative unknown on the international stage, but left it as one of the stars of the tournament.
Though her ambition always tolled in the background, she had come to respect him, for his unstudied fairness, his gaiety, his integrity and openness, which was as plain and light and valuable as a metal unknown in her world.
Unknown hackers, perhaps a world away, had inserted malicious software into the computer networks of private-sector companies that operate most of our transportation, water and other critical infrastructure systems.
Because the Mac team has always understood that really great design makes an object seem like a hitherto-unknown part of oneself, a new way to encounter and express yourself in the outside world.
Coming to the championships as a virtual unknown, Aggar announced his arrival on the world stage with comprehensive victories in both the heats and semi-finals.
The Cambodia Ministry of Health and the World Health Organization said in a joint statement Wednesday that the unknown respiratory disease also involved neurological symptoms, and that only one of 62 children admitted to hospitals with the illness survived.
Huawei, the telecoms infrastructure giant - virtually unknown as a phone brand in many parts of the world.
They have a tough group with the world champions - and in my opinion the best team in the world - Brazil, a brave and physical Norwegian side and the unknown quantity of Morocco.
One reporter said there was a veritable "hedge of khaki" around the tomb of Britain's unknown soldier of World War I.
Cover art was drawn by Jean Phillipe Delhomme of The Unknown Hipster, a blog that wittily and cannily chronicles the idiosyncrasies of the fashion world.
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Perhaps it's a bit much to expect him to be our World Cup winner, but he's relatively unknown on the continent and his pace could surprise more than a few defenders.
As I wrote in a story about R last spring the explosion of cloud computing and sensors is creating huge data sets, and a need to find previously unknown patterns in them, both to prove and predict how the world runs.
According to Reuters, the World Health Organization (WHO) originally issued an international alert in late September saying a virus previously unknown in humans had infected a Qatari man who had recently been in Saudi Arabia, where another man with the same virus had died.
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Hawk, a 31-year-old wholesome-looking father of two, was virtually unknown outside the skateboarding world three years ago.
As those unknown territories shrunk on maps, a record was left of the limits of western man's world.
ECONOMIST: Modern man knows where he stands. His map tells him
Not a great movie, but one of the great, unknown (in this country) stories of the Second World War.
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