*waits for WFS

The people who are crazy enough to think they can change the world are the ones that do.
If Not For The Gutter... My Mind Would Be Homeless......
ummmmm..... lemming soup!
       

I personally put the light at which ever side suits best, or if I cant decide - to match which side has the most light on it in the room where I'm drawing it for conveniance.

That's bollocks. Making things up to look sophisticated, is stupidity in it's strongest form

No, the lightsource is always (afaik) placed where it fits the composition best. In a lot of paintings, they use multiple lightsources instead of one (El Greco, Picasso) to attract the attention to the most important parts. In paintings with a strong single lightsource, it's placed where it fits the composition best.

For example Caravaggio.
Lightsource from above:
http://tollelege.files.wordpress.com/2007/12/caravaggio_st_paul.jpg
Lightsource from the left:
http://www.lexscripta.com/graphics/Jerome/caravaggio.jpg
Lightsource from the right:
http://faculty.evansville.edu/rl29/art105/img/caravaggio_stmatthew.jpg

(Or we should assume he changed hands over time from left to right to some sort of upper hand or something like that.. )

Delatour would make another good example.
Light from the left-ish side (but within the painting):
http://www.reproarte.com/files/images/T/tour_georges_de_la/die_reuige_magdalena.jpg
Light from the right-ish side (also withing the painting):
http://philippe.gambette.free.fr/Photos/MuseeBesancon/Georges%20de%20La%20Tour%20-%20Saint%20Joseph%20charpentier.jpg

Both artists worked very strongly with light. And it's not true with either of them. If light was so important to them, they would have adapted their composition to fit with their natural limitation, wouldn't they?

If such a statement was true, paintings would lose a lot of their artvalue.. It would mean that an artist couldn't put his own limitations aside. That would truely be something to cry for..

BTW: That would be funny with Da Vinci, as he switched hands in his life (he lost one of them or something). In that case, you could draw a line between his left hand work and his right hand work...

yes I think Greco and Dali's work show they were octopi

"For example Caravaggio.
Lightsource from above:
http://tollelege.files.wordpress.com/20

Using the theory that was presented to Fokker, does the same person have an idea as to which hand Einstein wrote with based on the length of letters and how far his lines of theorums extended across a page?

Anyway, trying to add light yourself without a real or photographed subject, (unless you are very experienced with light useage,) is a recipe for messing up the light composition anyway. No-one can place light exactly as it would be naturally and trying to do so is nothing to so with what hand an artist would use. The statement presented was also a gross generalisation.