Real story.  I was teaching a colleague to use random variables for scheduling, with code like this:

Time t = Seconds (0);
ExponentialVariable rng (5.14);
for (n = 0; n < 10000; n++)
{
    Schedule (t, ...);
    t += rng.GetValue ();
}

He asks, "shouldn't the 'ExponentialVariable rng (5.14)' part be inside the for loop?".  I had to explain to him that rng.GetValue () actually generates a new value each time it is called.  We came to the conclusion that perhaps GenerateValue () would be a better method name.

So I leave here that thought for your consideration...