I think natural is the perfect explanation - many children have lucid dreams long before they know or understand what it is that's happening - pretty sure they weren't trying to become lucid . . . It happened 'naturally'. Some people can sing without learning how - it's part of who they are - time allows them to hone their skills and get even better over time. I can't sing and don't have a voice for it - it is not natural to me and never will be . . . I'd have to be taught and learn how to. I play guitar but had to teach myself - it didn't come naturally. I'm sure some people will never learn how to LD and it doesn't come naturally to them for sure.