"The other modalities exist but they're less effective (knife/machete/truck)" No, they aren't. This guy in Las Vegas killed ~160. The 9/11 attackers killed ~3,

"The other modalities exist but they're less effective (knife/machete/truck)" No, they aren't. This guy in Las Vegas killed ~160. The 9/11 attackers killed ~3,000. > or are hard to manufacture and use (bombs). No, they aren't. The Happy Land Social Club attacker killed 87 with a dollar's worth of gasoline.