If we were a rational civilization we'd stop all scientific research immediately. First there's a good chance the great filter is ahead of us and will be trigge

If we were a rational civilization we'd stop all scientific research immediately. First there's a good chance the great filter is ahead of us and will be triggered by a technology break-trough. Second with nuclear weapons we got lucky in that it's extremely hard to separate fission capable isotope of uranium from mineral ores; if in the future we invent a powerful weapon that's easy to produce organizations like al-Qaeda will destroy every city on Earth.