Mine didn't give the appearance of knowing. He shaved all of his hair off, i.e., the same appearance he had as a child of 6/7. He then purchased matchbox cars and sat in the floor and played with them and every now and then would call my attention to the hood, trunk and doors that would open on certain models.
They also do not remember quite a bit of what transpires during the crisis.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
