[25mph]

Interesting. Mind is often divided into two halves: the lower concrete mind that constructs specific thoughts with shapes and the upper abstract mind that sees ideas. From your story it sounds like LSD suppressed your lower mind, so you could see ideas better, while the lower mind was still functional enough to materialise these ideas into 10 pages of writing.

There is an interesting exercise for people with somewhat functional upper mind and I wonder what's going to happen if you try it in that LSD-elevated state. The exercise is just focused thinking about the relationship between sound and space. Before the exercise begins, the "trainee" needs to get a good understanding of the two concepts. First think about what the general idea of sound is: what really makes sound a sound? Then think of space as the spacetime in the GR theory: it's some kind of fundamental structure that obeys wave-like GR equations, so it naturally has all sorts of quantum-scale ripples and large gravity waves. Once you have a grip on the two concepts, the exercise begins: combine the two thoughts and stare at the "mix" with your mind.

For average folks this will produce no effect. But for those with somewhat working upper mind and well functioning lower mind, this produces one specific effect. I basically wonder if LSD allows you to skip a very long training process and enter the mode, at least temporarily, to make this exercise useful.

P.S. As to what that effect is, I'd say it doesn't matter. If it works, you'll see it. Turning on lights is a matter of flipping a switch, not the knowledge of electricity.