James Delingpole writes about The Linear No Threshold Hypothesis
It is a brilliant wheeze. By working out how many deaths are caused by a big amount of toxin you can work backwards and predict how many deaths a tiny amount would cause. Simples.
Of course this could work for anything - like Green policies. Just work out how many people will die because of fuel poverty this winter due to green policies, and work back to how many deaths there are per Green Politician (Watermelon cf Delingpole).
So really it is always the season to harvest Watermelons...