/u/iphikrates has several posts on this exact subject: https://www.reddit.com/r/AskHistorians/comments/i1fne9/i_am_the_parent_of_a_child_that_has_not_met_the/fzxe0ks/ https://www.reddit.com/r/AskHistorians/comments/7y3kxy/did_spartans_really_used_to_throw_imperfect/