Alright, let's say the author is right and low-level radiation exposure is not harmful. Then... what? If a little radiation is not harmful, then we should be more relaxed about radiation, deregulate it and allow companies to contaminate our living spaces? Is that why the argument is being made?

But as the article mentions, in those Taiwanese flats there were large variations in radiation levels in different spots in the building. If we allow radioactive contamination everywhere, will it be neatly spread out at harmless levels? How would you know? What if you happen to ingest traces of the harmlessly radioactive material now surrounding you?