Is a bomb belt considered a technical innovation?
Disappointingly (was hoping my wait was over) I think we can actually give that one to the Tamil Tigers who used a similar device and tactic to assassinate Rajiv Ghandi a few years before the Intifada and Palestinian homicide bombings began. What's interesting is that your typical Israeli and your typical Palestinian are as close to being genetically identical as you can get. Sort of puts the "nature vs. nurture" debate in perspective.
It is part of the Arabs' "Mohammeden Misery Tour"..