Where are you getting your information that we have to chose between safe but expensive plants, or cheap but dangerous ones? On some level you can cut costs ju

Where are you getting your information that we have to chose between safe but expensive plants, or cheap but dangerous ones? On some level you can cut costs just by using thinner pressure vessels or containment structures, but the key issue with facilities like Fukishma is that when things fail the reactor starts to go critical unless you actively stop it. Many new designs are specifically design to go sub-critical when failure happen.