Imagine a telic version of Chinese Whispers, not in a circle but down a line and back again. Originator asks a question which gets mutated. How does the answer get mutated on the way back?

Instead of a factual question, how about a collaborative one. "Everyone flip a coin. How many people got heads?"

What is the literate analogue of Chinese Whispers? Where is the written word lossy compression and decompression?