3 ms·

I wonder how much of it was just a https://en.wikipedia.org/wiki/Clever_Hans https://en.wikipedia.org/wiki/Clever_Hans situation

• Rendello 1y ago
  And at least in Hans' case, the general public could instantly verify the result, as opposed to having it interpreted by a biased handler.
• typpilol 1y ago
  Almost all of it was exactly this. That's why it's never been done again. Because it was never done in the first place.