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The Discovery of Biosonar:
1. Spallanzani and Jurine
Spallanzani embarked on painstaking and exhaustive experiments. The results were so strange to him that they challenged his credulity. They contradicted common sense and reasonableness. But he was a good scientist, and in the end he accepted the empirical evidence of his many, thorough experiments.
First he made little hoods for the bats. The hoods really impeded the bats, and they bumped into things a lot.
But how specifically, thought Spallanzani, had the hoods prevented the bats from functioning normally?