Because necessary and sufficient conditions for the existence of a BIB design with given parameters are not known, it is often a very difficult problem to decide whether a design with given parameters (satisfying the known necessary conditions) really exists.
Voting in Nigeria's legislative elections began on April 2, 2011, but, because necessary electoral materials were not available in some areas, voting was halted and postponed until April 9 April 266 in some locations).
The New York Water Taxi's ferry between Red Hook and Governors Island was canceled last summer, according to Tom Fox, the president of the company, because necessary subsidies from the Governors Island Preservation and Education Corporation, the state and city entity responsible for oversight of the island, were not available.
In response, Mugabe called for the elections to be held on July 31 , 2013 initially ignoring complaints from Tsvangirai and others that it was too soon for the polls to be held, because necessary democratic reforms had not yet been enacted and because the country would have trouble organizing and funding the polls on such short notice.
The optimists are right, but in part that is because necessary adjustments after the excesses of the 1980s have been postponed.Monetary and fiscal policy mistakes helped to deepen America's depression, but they did not prevent the adjustment that was vital for the system to cure itself.
Mahmoud Daher, the senior World Health Organisation official in Gaza, says equipment repairs are often impossible because necessary spare parts fall foul of Israel's "dual-use" list of items which could be used for militants' weaponry – or because to send the machines out of Gaza would contravene parallel export restrictions.
He said it decided to seek a manufacturing partner because the necessary equipment cost $50 million to $150 million.
They know that nothing is final, because if necessary, a remix can fill in the blanks.
That is because the necessary policies will be surely very painful.
The routine play of a spade honor for a finesse is doomed, because the necessary diamond layout cannot then exist.
The existing information systems created many challenges, because the necessary data were not in one place.
