they repeated all the Thunderbirds episodes about 10 years ago. My son was 3 and loved them. Was like seeing them afresh all over again watchign with him.
After about 5 or 6 episodes we were watching and he said;
“that one looks like he’s got a string on his hand!”
I said, without thinking “Well he is a puppet”.
Long pause when I realised he hadn’t known and he came to the realisation that he may have been labouring under a misaprehension.
He eventually said: “So are all the Thunderbirds puppets then Daddy?”
I had to concede that they were.
He’s wasn’t dim, just very willing to believe and I took it away from him 🙁