Generate a sequence of random numbers that sum up to 1?

[Terry Reedy]

"fumanchu" <fumanchu at amor.org> wrote in message 
news:1145825688.099549.195040 at j33g2000cwa.googlegroups.com...
> I'm surprised noone has pursued a course of subtraction rather than
> division.

I believe someone did mention the subtraction method in one of the initial 
responses.  But the problem is this.  If you independently sample n numbers 
from a given distribution and then rescale, then the scaled numbers still 
all have the same distribution (and are uniform in that sense).  In the 
subtraction method, each comes from a differnt distribution, as others 
explained, with the nth being radically different from the first.

Terry Jan Reedy