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The cases which have raised difficulties needing explanation are those in which the court has ruled that there was prima facie evidence of negligence , or some evidence of negligence to go to the jury . Little is being done to change local regulations that restrict development size and density or that drive up housing costs , because loosening the regulations means sacrificing other public interests , including some environmental , health and safety goals . According to our callers , not only do many post offices not have these materials on hand , but also some postal employees , particularly at the smaller retail outlets , are not even aware that such things exist . When a group of facts thus singled out by the law exists in the case of a given person , he is said to be entitled to the corresponding rights ; meaning , thereby , that the law helps him to constrain his neighbors , or some of them , in a way in which it would not , if all the facts in question were not true of him . In 2002 , The Toronto Star described the group this way : " The members of Britain 's Hilliard Ensemble have helped set the standard for small male vocal ensembles , producing some of the most exquisitely blended , beautifully balanced quartet singing to be heard on the concert stage . The real problem is not the technology , or even some of its seductive promises of convenience , security and efficiency .