Where will terrorists strike next?
Airports are targets because of the large concentrations of people. However terror strikes could be more subtle. What if you could contaminate the food supply. That would hit a lot of people. But surely any poisonous food would be removed from the shelves after the first person keeled over. The trick is not to have it so poisonous that it's obvious. Have it so that statistically people will die. It could then go on for years before anyone noticed. Even when it was noticed then people would argue for ages whether it was actually harmfull or not.
If you did this over several decades with several types of poison then it would become normal. A sort of trend. You could kill 20% of the earths population and a few scientists would fret, a few conspiricy nuts would spot it, but as I said in an earlier post they are wrong by definition. The cancer cure Doctors would be delighted with all the yonger people getting cancer since they have a higher recovery rate.
Everyone is happy, except for the terrorists since their work has gone un-noticed.
It's a good job that something like that can't happen because it's a conspiricy theory I just made up.