The luminous strips on the hands of my alarm clock are radioactive. The smoke detector on my ceiling has a radioactive source in it. The rock under aberdeen is radioactive. Once and for all will you please grasp the concept that this is meaningless without NUMBERS attached to it.

What they state is that they have no way to effectively shield against that radiation for long duration exposure such as any future lunar astronauts will be exposed to.

But the key issue we've been trying to get you to grasp is whether or not they needed it for the short Apollo missions. Radiaition exposure has different effects depending on intensity and length of exposure. In many ways it is far more dangerous to spend months in a low level radiation environment than it is to receive a short burst of high intensity radiation. A chest x-ray will not harm you. Sit in lower intensity x-rays for months at a time and you will very likely get sick. Do you understand this?

Apollo was a short flight with the astronauts spending a few days out in space. Future missions are planned to last months or even years. What was fine for Apollo in terms of radiation shielding will be hopelessly inadequate for the planned missions because of their duration.

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"The very powerful and the very stupid have one thing in common: They don't alter their views to fit the facts, they alter the facts to fit their views." The Doctor, Doctor Who: The Face of Evil.