Look at Satan. Created as an angel, grows up to be the Great Adversary. Hey, if you’re going to go on about genetics, you might as well say the kid will grow up to be an angel. After all, his father was really big in Heaven in the old days. Saying he’ll grow up to be a demon just because his dad became one is like saying a mouse with its tail cut off will give birth to tailless mice. No. Upbringing is everything. Take it from me.
I think when people mean that Discworld books have become darker they really mean the series is growing up. In 'The Colour of Magic' most of the city is set alight. It's a joke, in much the same way that the Earth is destroyed almost at the start of Douglas Adams's 'The Hitchhikers Guide to the Galaxy.'
The girls were expected to grow up to be somebody's wife. They were also expected to read and write, those being considered soft indoor jobs that were too fiddly for the boys.
There are no medium-sized trees in the deep forest. There are only the towering ones, whose canopy spreads across the sky. Below, in the gloom, there's light for nothing but mosses and ferns. But when a giant falls, leaving a little space ... then there's a race - between the trees on either side, who want to spread out, and the seedlings below, who race to grow up. Sometimes, you can make your own space.
And Sam Vimes thought: Why is Young Sam's nursery full of farmyard animals anyway? Why are his books full of moo-cows and baa-lambs? He is growing up in the city. He will only see them on a plate! They go sizzle!
