My nephew when he was 2 would "play" with my mom and grandpa who had passed away. His mom would hear him talking in his room to grandpa and gammie. After grandpa had passed away, grandma gave away his clothes to goodwill exactly like grandpa wanted. A couple days later, my nephew went up to his mom and said "Mommy, grandpa said they gave away his clothes". Grandma didn't tell her they had done that, so how would he have known? Only way he would've known would be if grandpa visited him as a ghost.