The Sour Paradox and Memory Loss is Memory Gain

Of the classic five categories of taste, sweet, salty, sour, bitter, and umami, only one of them has no discernible evolutionary purpose. Scientists do not understand why we even sense sour, let alone why it is so pervasive across species. Jeff and Anthony look at the evidence and consider the most prominent theories. Then, what if having a touch time remembering something isn't a bug, but a feature? Anthony and Jeff examine a new paper that suggests that out brain is optimizing for success when it limits recall.