"Can you describe this radiation?"

Well, depending on your DNA it can make your body able to stretch really far, make it able to produce flame, make it invisible, or make it extremely hard and rock-like.

Windows update categorizes patches as either important or optional. The KB3035583 one is in the optional list. I've got updates set to "let me know, but I'll decide when to download them".

Am I safe to download the important updates and ignore the optional ones, or are there trojan horses among the important updates also?

You ever watch a movie that supposedly has a good ending and wonder then what happened? In Logan's Run the lifeclocks were destroyed so you'd think it was a happy ending where nobody had to die at 30 on Carousel any more. However, the computers controlling the city were also destroyed, so you have a city full of people that may not have a clue about such things as farming or how to feed themselves. They've been bottled up in that dome for decades or centuries, so do they know how to build shelters? Can they build power stations? Electrical systems? Can they produce heavier clothing for when winter arrives? Do they even know what winter is? They apparently reproduce by external means, so are they capable of doing it the normal way, or did the computers have them sterilized in order to control the population levels?

Happy ending, or quick extinction by starvation, freezing, disease, and other factors?