Is Your Brain Fixed?

The following is a conversation between my 5 year old son and 4 year old daughter tonight during our ride home.

Olivia: Daddy, if you look back here on the way home I might be asleep and you can tell me to wake up.
Thomas: Daddy, my brain is fixed and my mind is right so I know 'Livi is lying.
Daddy:  Thomas, 'Livi isn't lying if she says she "might be asleep".  She would only be lying if she said she "was asleep" when she wasn't.
Thomas: Yes daddy, but my mind is right and my brain is fixed so I know 'Livi is lying.
Olivia: Thomas, MY BRAIN is fixed and MY MIND is right and so I know your brain isn't fixed.
Thomas: MY BRAIN is too fixed. It's not a machine that has parts that break.
Olivia: Well, my brain is fixed and my mind is right.
Thomas:  'Livi, do you know who fixed my brain and makes my mind right?
Olivia: No.
Thomas: Guess.
Olivia: ***no response***
Thomas: 'Livi I'll give you a hint. His name starts with a "G".
Olivia: ***no response***
Thomas: 'Livi, it starts with "G, O, D" and He's sitting on a cloud.
Olivia: JESUS!
Thomas: That's right and He fixed my brain and it doesn't have any parts because heaven doesn't have any machines.
Olivia: Yeah, because Heaven doesn't have any machines that have parts that break down.
Thomas: So daddy, I know when 'Livi is lying when she says she's asleep, but she's really awake.
Olivia: McDonalds!