Ok let’s just ignore the money aspect then. In this case we are talking about radiation shielding, which is made from metals that have to be mined at great envi

Ok let’s just ignore the money aspect then. In this case we are talking about radiation shielding, which is made from metals that have to be mined at great environmental cost and then smelted with lots of energy input. That environmental impact is not worth mitigating such an unlikely risk.