“I'm sorry, what?” Dad looked baffled.
“Your house is straddling a fault line between what's real and what isn't. That's why it doesn't seem so solid. Looking at it, you're seeing how it actually looks and how you imagine it looks, both at the same time.”
“How I imagine it looks?”
“Yes, your mental image of the house, and the mental images your family have, all over-laid in one place.”
“And this is caused by the temporal wotsits, the photographs?”
“Good lord no, they're a symptom certainly, but the cause is far more worrying.”
