Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials. Keynes argued that savings and investment were two interdependent variables, not two independent variables. It said the regulations allow agency staff to forgo their right to equal pay with directly employed staff in return for a contract that offers pay between assignments, known as a “Swedish derogation” contract. It said these were “widely abused, as noted by the government commissioned Taylor Review of Modern Working Practises”. In 2010, China overtakes Japan being the other world's economy. According to economists, China remains to be a developing country with fast pace of growth. Data released that Japan\'s gross domestic product is $1.286 trillion while it is worth $1.335 trillion for China. Another source demonstrates Japan keeps growing at 2-3 percent in compared with 10 % a year of China. The school provides excellent education to its students and grooms them into responsible citizens around the globe. The school carries a very well-maintained infrastructure. The school has well-lit and ventilated classrooms. The school features a big playground which includes provision for games like basketball, indoor games like gymnastic, chess, table tennis and carom etc. The school features a well-trained staff that's very committed to teaching. The teachers impart education inside most beneficial way. The teacher-student ratio with the school is well-balanced to ensure that just about every student gets health care and attention. The school has a library that includes a good number of books. Until then, depositors had not even seen a rise.