[I Shall Endure]

Nuclear explosions leave readily measurable radioactive by-products. Unless the survivors had only pre-20th century technology, a nuclear explosion would be identified as such.

[The Comedian]

Nuclear explosions leave readily measurable radioactive by-products. Unless the survivors had only pre-20th century technology, a nuclear explosion would be identified as such.

A sufficiently powerful series of *conventional* EMP devices would place us all in the front row seats of the off-Broadway revival of 1850, which features confusion and stars no radio-isotopic identification technology.

Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.