Okay, let's imagine an alternative universe where home-sized nuclear reactor somehow got popular and people got used to it. As a result, a typical city has mil

Okay, let's imagine an alternative universe where home-sized nuclear reactor somehow got popular and people got used to it. As a result, a typical city has millions of small nuclear reactors. Even though the government tries hard, it is impossible to regulate all of them to absolute safety, and every month there's a nuclear leak somewhere, in every city. As a result pretty much all mankind (well, at least the urbanites) enjoy(?) a permanently raised level of radiation and elevated rate of cancer. Experts say millions die per year worldwide, but since nuclear is a part of our life, we have accepted it as a given and decided it's the price we're willing to pay. On the bright side, because each reactor is so small, each leak doesn't cause evacuation of a city: at worst the unit is locked down for a few months, and (because we've been so good at it) usually nobody dies as a result. At least no one's death can be conclusively linked to any particular accident. So, in your metric, do you think this world is safer than our own Earth with large-scale nuclear plants? ...Now, note that this isn't just an idle fantasy: it's pretty much an exact mirror image of what we do with vehicular emission.