I'm trying to do a quick and dirty simulation of lightning flashes with
momentarily appearing point light_sources in a scene, and it appears that I
don't get any flashes except coincidentally and suspiciously in what appears to
be the very last frame.

All I'm doing right now is

#if (Flash = clock)
light_source { < rand(FlashX), rand(FlashY), rand(FlashZ) > color rgb <1,1,1> *
rand(Brightness) }
#end

I'm thinking that I need to "open the window" of where the random value and the
clock coincide to increase the probability of a flash - although I'm concerned
that my lack of insight into pseudo-random numbers in POV-Ray might doom me to
pre-destined failure here...  (See other thread on random placement of objects)

Has anyone worked with this type of thing before?
Helpful suggestions?

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