I believe a capability like that could be a key for our survival. It is required for our Alignment as the humanity. I.e. us being able to act together for the interest of Humanity as a whole. As the direst political lies are usually aimed at the splitting people apart and fear each other, as they are easier to control and manipulate in that state.
Also, this ability could be necessary for strong AI even being possible, as strong AI should be able to reason successfully on partially unreliable information.
And lastly, this ability will be necessary for AIs to check each other AIs reasoning.