Answer:
- Point out that he has just experienced hindsight bias, a concept discovered by social psychologists.
Explanation:
As per the given description, the most appropriate response to the roommate would be 'pointing out that he has experienced hindsight bias.' The concept 'hindsight bias' has recently been discovered by the social psychologists in which an individual displays a tendency to perceive events as more predictable than they actually are. This similar tendency is being displayed by the roommate when he asserts that 'he could have predicted the finding even before hearing about it' which needs to be pointed out as it might lead to creating distortions in his memory.
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