Even before watching, very interesting thing I would like bring up to anyone who might read it:
Human mind is very complex, and believe it or not, similar like our immune system, subconscious or conscious can reject or accept certain information based on priority and time basis, depending how information is fed to the brain. For example, we can remember a special event or a book we read, however we don't what we ate 15 days ago, a short term memory. Its also appears that mind can become "overloaded" when it receives too much information, resulting in us not remembering everything. So the point is when we learn too much factual information with no interest in it, such as for a goal or result, we begin to forget or simply not accept it for its real value, rather then face value. that explains why some children are not interested in learning (hope it makes sense, even thought its already well known, I am just stating the obvious, lol)