Hmmm... I think that if you ask any naturals, they have a linear learning curve, so it is like most everything else. There are some people that just can do it really well at the beginning and don't need any teaching (take any class and you will see this) they can teach themselves. There are the ones that try really hard to do good, and even if they don't do good at the beginning, they catch up in the end. There are those that are good at everything that they do, so when they do this they are more in the middle, but depending on their progress at the beginning and things they do, they can also get to the point of naturals. Then there are people that dont try hard and aren't naturals. The only difference between them and the ones that try hard is amount of effort, and the difference between them and the ones that are good at almost everything is their mindset is negative.

I believe that anyone can get good at LDing if they study hard and work hard and stay consistent. Knowing how to learn is something that is shown more easily when we are doing something like lucid dreaming versus school.