Here are the key points about flashbulb memories from the prompt:
- Flashbulb memories are vivid, exceptionally detailed memories of significant public events that people believe they will always remember accurately. 
- However, research has shown that flashbulb memories are often inaccurate. Details can be distorted or fabricated over time through repeated recollection and social influences.
- The prompt gives an example of someone (Jim) who had a vivid childhood memory, but upon examining it found that all the details were inaccurate. 
- This demonstrates that even memories people believe are exceptionally accurate due to their vividness (flashbulb memories) can become distorted over time and lose reliability. Accuracy of details cannot be assumed for flashbulb memories.
So in summary,