Once again, EVEN IN THEORY, how does showing an ID make you safer?
Tell me how, EVEN IN THEORY how I'm safer by showing an ID before I get onto an airplane. Tell me how. The 9/11 hijackers had valid government IDs. Did that make those flights safer?
If you say something like, well, we can check against names of terrorists, that's just absurd, as if terrorists intent on hijacking an airplane would obtain ID that listed their terrorist name in first place. As if Osama bin Laden is going to get on an airplane with an ID that says "Osama bin Laden." Please.
In theory, do driver's licenses make the public safer? Why require passports or visas for alien visitors, for that matter?