Our podcast yesterday talked about how hard it was to get a handle on the really large numbers. Lawmakers have to deal with these things all the times, a million dollar line in the budget, billion dollar bank bailouts, a trillion dollar federal deficit.
Sometimes government has to deal with long timescales too. In fact there is one regulation that would extend a million years into the future.
(In that story we take a time machine back one million years. And I have to say, before I did the story I wasn't quite sure what would be there.)