[keepamovin]

Perhaps the point is it's "confession theatre". You're put in a stress position, worried that the "magical machine" can read your darkest secrets, and told that everything will go easier if you're just honest, and so that's why you're inclined to spill them. Which is what they are trying to get you to do.

[gbcfghhjj]

Yes and also consider they want to assess how well you stand up to interrogation generally

[keepamovin]

Hm, what's the relevance for people who don't leave office?