Children are often believed to have memories before they were born - for some believe fairy tales are young boys and girls' recollections of the pre-existence world, fractals of flashbacks that give us a glimpse into "Heaven".
What's lesser-known is that since ones' worldview only settle when they reach 11 years old, children perceive the world through a pair of unbiased lens, and are able to see what adults would subconsciously discard as fiction or fantasy.
For this reason, they are also seen as Explorers living in their own worlds of fantasy, exploring their own memories of pre-existence - except that their tales of Heavenly Gates and Angel Stories are not memories before they were born, but rather unbiased perceptions of our reality visible only to the sinless minds.