For me, it's strictly connected with interest.
If I'm not very interested, it's near impossible for me to learn much about that subject.
/Mats
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Interests: Comic books, Manga; most things to do with Handicraft, wood, textile, metal etc, modern materials; horror, true crime; languages, art, and history to an extent
Uninterests: All things about motors; celebrities; fashion; sports; career; stock market
Feel free to PM me!