Unless you want to say (& you could) that EVERYTHING is a mental projection, including the way we "raise" children. Would "children" exist if they were shipped to Lord o'the Flies Island at birth? To be "child" perhaps is to be human at a certain age in a familial relation (relativity).

"Unless ye turn & become as little children ye shall not enter the Kingdom of Heaven."

[Is this about acknowledging a relationship? Personism, O ye of lil kiddy faith.]