The discussion revolves around the definition of terrorism, particularly in relation to attacks on civilians aimed at achieving political, ideological, or religious goals. Participants differentiate between civilian casualties that occur accidentally during formal warfare and those that are intentionally inflicted during surprise attacks, citing events like 9/11 and the Madrid bombings as examples of terrorism. The conversation emphasizes that true terrorism involves targeting civilians without clear identification of the aggressor, contrasting this with traditional warfare where combatants are identifiable. There is also a sentiment expressed that terrorists are cowardly for not confronting their opponents directly. The complexity of defining terrorism is acknowledged, with some participants feeling that the binary voting options (yes or no) do not adequately capture the nuances of the issue.