No, polygraphs are bad lie detectors/truth detectors.

They are perfectly fine as detectors of areas of interest for investigators to probe deeper.

Yes or to pressure you into confessing, honestly good interrogators can do this without the machinery.

estearum 12 hours ago | parent | next [-]

Good carpenters can build stuff without nail guns, doesn’t mean it makes sense to use hammers.

Carpenters use hammers all the time…

	▲	estearum 11 hours ago \| parent [-]
		Uh yeah… just like investigators use tools other than polygraphs. The point is that just because something can be done without a specific tool does not mean you should never use the tool. I guess I should’ve added “doesn’t mean it makes sense to use hammers exclusively" for the HN pedants.

No, because I would never talk to them.

	▲	tbrownaw 11 hours ago \| parent [-]
		Unless you just never talk to anyone, how can you be sure you'd know?