The narrative goes that Ted Kaczynski, the Unabomber, crazed Heideggerian serial killer, was wicked smart.  That may be; it takes a lot of intelligence (and patience, etc.) to construct mail bombs.  He, however, was a terrible arguer.  Peter Ludlow, of Northwestern University, has a slide show presentation showing us how.  Check it out.

Now if someone would do this for the most recent Joker of Batman movie fame.