cultivate a sense of care about others and things in the world. Due to its importance, there are debates about the extent to which contemporary societies do an effective job of cultivating the right type of curiosity. Some believe that children's curiosity becomes discouraged throughout the process of formal education: "Children are born scientists. From the first ball they send flying to the ant they watch carry a crumb, children use science's tools—enthusiasm, hypotheses, tests, conclusions—to uncover the world's mysteries. But somehow students seem to lose what once came naturally." Sir Ken Robinson discusses a similar phenomenon in his TED Talk titled "Do schools kill creativity?" When curiosity in young people leads to knowledge-gathering it is widely seen as a positive. Impact from disease Different neurodegenerative diseases or other psychological disorders can affect various characteristics of curiosity, for instance Alzheimer's disease's effects on memory or depression on motivation and reward. Alzheimer's is a neurodegenerative disease that directly affects the capability and capacity for memory. Depression is a mood disorder that is characterized by a lack of interest in one's environment and feelings of sadness or hopelessness. A lack of curiosity for novel stimuli might also be used as a potential predictor for these and other illnesses. Morbid curiosity Morbid curiosity exemplifies an aspect of curiosity that can be seen as focused on objects of death, violence, or any other event that may cause harm physically or emotionally. The idea of morbid curiosity typically is described as having an addictive quality. This addictive aspect of the need to understand or make sense of topics that surround harm, violence or death can be attributed to the idea of one's need to relate unusual and often difficult circumstances to a primary emotion or experience of their own, described as meta-emotions. Understanding these difficult circumstances dates back to Aristotle in his Poetics, stating, "We enjoy and admire paintings of objects that in themselves would annoy or disgust us." State and trait curiosity There are two distinct classifications of types of curiosity: state and trait curiosity. Both types determine whether curiosity comes from within or outside of a person. State curiosity is external such as wondering why things happen for the sake of just curiousness, for example, wondering why most stores open at 8 a.m. This type of curiosity tends to be the most relatable for people on a day-to-day basis since state curiosity relates