Abstract: From a first content including a first assertion, using a natural language processing engine, a plurality of knowledge blocks is extracted. A metric corresponding to a first knowledge block in the plurality of knowledge blocks is computed, the metric evaluating a corpus of content against the first knowledge block. By comparing the metric with the first knowledge block, the first assertion is identified as a contrarian assertion. An indication of the contrarian assertion is caused to become visually associated with a portion of the first content on a presentation device.

Abstract: From a first content including a first assertion, using a natural language processing engine, a plurality of knowledge blocks is extracted. A metric corresponding to a first knowledge block in the plurality of knowledge blocks is computed, the metric evaluating a corpus of content against the first knowledge block. By comparing the metric with the first knowledge block, the first assertion is identified as a contrarian assertion. An indication of the contrarian assertion is caused to become visually associated with a portion of the first content on a presentation device.