A long time i've faced the forums with the idea's i've read.
"Creating light, illuminating a room, is impossible"

However, I never heard if it was impossible for near everyone to create light in GENERAL (eg.: to create a light-emanating light-bulb).

Because, and to be honest, I found it EXTREMELY easy to do this: ( Ijust tested it last night because I wanted light in a dark room, so it was my first try )

In a dream I went outside. and got back into this bedroom of mine (i'll keep details saved because it isn't about ''this lucid dream'' or w/e).

The room was dark and no longer illuminated (it was at first).
Pressing light switch? Nothing.
So I went like.. ok.. I want a light.. I raised my hand and just THOUGHT of manifestating a light there, and voila, a really really weak light appeared, the source had the shape of a flat ''map-creator'' light-bulb.

I removed it as it was too weak. Then I focussed on the sun (sun gives off a lot of light, so a mini-sun should do as well).

So I did think of a small sun, and voila, small sun appeared.
It illuminated the whole room and it's strength (in brightness) and reach were so great that I could technically use it to replace the real sun.

So here you have it, i'm not sure if anybody even TRIED this kind of technique, but if you didn't.

Try creating a light-source in your hand, Do not try to create the light itself.
It's much easier