I'm very much inclined to consider anecdotes like this as simply hindsight and confirmation bias. They most likely had a slight suspicion, which has been ampli

I'm very much inclined to consider anecdotes like this as simply hindsight and confirmation bias. They most likely had a slight suspicion, which has been amplified in their memory. They may also have had similar suspicions about other children, which have been forgotten after they came to nothing.