Unabomber 's manifesto. Theodore John "Ted" Kaczynski (   / kə ˈ z ɪ nski / ka- ZIN -skee , or ka- CHIN -skee ; Polish : Kaczyński , pronounced [ka ˈ t ͡ ʂɨȷ ̃sk ʲ i] ; born May 22, 1942), also known as the "Unabomber", is an American