[quote=@DarkwolfX37]
<Snipped quote by Techspert>

You're presuming a lot about me then. I used to be able to learn things easily. Quantum physics? No problem. Give me a wiki page and I'd know it inside and out. Now I can't even understand the same pages. I'm not strong. I have literally no redeeming qualities beyond an inability to not help when I feel I can. Humans are trash, but I'm pretty much bottom of the barrel trash, and nothing you say is going to change that or convince me to pretend otherwise. I've accepted it, it's fine. Don't worry about it. 
[/quote]

The neuroplasticity of the human brain allows it to learn and reduce skill in areas depending on how they're reinforced. Each neuron or neuron matrix establishes a "knowledge-base" that the rest of the brain utilizes in order to "know." When you learn something new or work on an existing skill, the existing paths are made stronger, while new paths aren't made as often. The reason new concepts can be learned so easily as a child is because this acts as a network of roads, where a new, small road can be added relatively easily and often. As you age, the small roads begin to be replaced by stronger and faster "highways," where thoughts occur more efficiently. When building your neural "highways," your subconscious decided that certain skills could be better used in other areas, hence a more difficult time understanding quantum physics, but an easier time understanding the complexities of human emotion. The way to rebuild highways or make the current roads larger is to put passion and effort into whatever you want to achieve.