It's the most detailed open source community of people that are working together to come up with a solution.

I haven't dedicated any consistent time/effort towards it, but I developed a much deeper understanding of stages you progress through as you develop your mind's eye.

I'm at 3% from 0%, with 100% being able to visualize things with ease like a HUD of sort. 3% is going from complete darkness to just beginning to be able to manipulate small stimulus (while eyes closed) into something bigger / more vivid.