"A measure of abnormal long put volume was also examined and seen to be at abnormally high levels in the days leading up to the attacks. Consequently, the paper concludes that there is evidence of unusual option market activity in the days leading up to September 11 that is consistent with investors trading on advance knowledge of the attacks".[67] —Allen M. Poteshman, The Journal of Business
If the curing concrete of the Hoover dam hadn’t been water cooled, it would still have more than 30 years of cooling to go. Basically when you have literal tons of material, you have a lot of insulation, even if the material itself isn’t a great insulator.