However Suan's conundrum is currently voiding many advances in education in the developing world; whilst education has potential to be one of the greatest weapons for change in these areas its power is extremely limited if it is inaccessible to those most in need of change.
United announced that the price was a mistake and that it would be voiding not only their tickets, but those of several thousand others who had got wind of the deal.
Attacks on infrastructure are common.Industry insiders reckon that voiding contracts would also damage Yemen's already weak reputation as a place to do business.
Rahm Emanuel, Chicago's mayor, who had fought hard to get the library for his city rather than New York or Honolulu, watched proudly as the president proclaimed: "We can attract the world to Chicago".Even at that great moment, however, Mr Emanuel was reminded of the bad news of the week: the voiding by the Illinois Supreme Court of a plan to fix the state's and the city's gargantuan pension debt.
At the moment, the principle of "utmost good faith" obliges an applicant for insurance to disclose any information relevant to the insurer, under penalty of voiding the agreement.
Another potential remedy would be trying to deter players from cheating through harsher punishments: increasing the length of suspensions, voiding the contracts, or even deducting wins from the teams of players who test positive.
Not only whether voiding the tickets was fair, but whether it was legal.
If customers were not themselves acting in an upright way gleefully jumping on an error by United can they really claim that the carrier is in turn being caddish by voiding their tickets?
Although the device will not restore voluntary voiding, and patients will not know when they are going to urinate, the bladder will empty more completely and far less frequently than without the prosthesis.
For typical youngsters, computers have become too complicated, too difficult to open (laptops especially) and alter their settings, and way too expensive to tinker with and risk voiding their warranty by frying their innards.
There are strong grounds for voiding those contracts and starting the bidding again.Would that be legal?
