In an open class system, people are ranked by achieved status, whereas in a closed class system, people are ranked by ascribed status.The main difference or basic difference between an open class system and a closed class system is the degree of social mobility within society. This means that according to their type of partnership individuals may or may not mobilize, be independent or occupy an established hierarchical level. Normally social systems are divided into Slavery, Castes, Classes and Estates and each of which has specific characteristics such as A class system or open class system allows the individual to occupy a position within society depending on their level of effort to acquire it, likewise, the individual has the freedom to mobilize. On the contrary, a closed class system admits very little or no mobility for its individuals, an example of this is slavery or castes where mainly people are the property of others or their acts must always obey only specific beliefs and strict principles that they prevent their social mobility or growth in hierarchies.
selective attention is very important because something so serious like that injury, when brushed off can spread and cause more damage and issues to your body mentally or physically. he should have payed more attention, because he would have noticed the injury and got it dealt with rather than brushing it off and continuing. the pain became worse as he put more pressure on it