Previously Held Convictions was founded on the observation that changing one's mind is the most common human activity that no one will admit to performing. We exist to close the gap between what people once believed and what they now claim to have always believed.

Our archives are comprehensive, our filing system is idiosyncratic, and our retention policy is permanent. We do not offer deletion services. We tried once. We changed our minds.

The archive's earliest entry is "fire is impossible." It was revised. Most things are. We have found this neither troubling nor reassuring. We have found it reliable.