What Israel has just done is, via *any* method, reckless. They blew up countless numbers of people who were driving (meaning cars out of control), shopping (your children are in the stroller standing behind him in the checkout line), et cetera. Indistinguishable from terrorism.
As information comes in about the exploding beepers in Lebanon, it seems now more likely than not to be implanted explosives, not a hack. Why? Too many consistent, very serious injuries. If it were overheated batteries exploding, you'd expect many more small fires & misfires.