Stem wrote:If I teach my child a lesson based on my history and there are other pieces of evidence that might bring into question my own memory on that history I tell, is it immoral for me to use it without alerting my children of the other evidence (like my sister disagrees with a piece or two of the story I tell) if one of my children benefits and the other suffers as they base their life, at least in part, on the lesson?
It's not about teaching history. It's about deriving authority from an assumed basis. If you told your children about your advanced knowledge in medicine and portrayed yourself as having a special knowledge regarding medical concerns, and relied on this to advise your children to not vaccinate their own children when they were of age while discouraging them from reading the research on vaccinations, that's immoral. If one of their kids dies from measles, you would be culpable. If they dodge that bullet, it doesn't lessen the immorality of your actions and deceit.
It's the use of deceit to claim authority leading people to make significant life choices rather than supporting their access to information so they can make informed decisions that have these impacts that ties this to a question of morality.