The scientist was in his laboratory experimenting with flies. He was interested in the reaction time of a fly responding to a sharp noise.
He placed a fly on the table, turned on his automatic test equipment that would start very precise timing the moment he clapped his hands, and was ready. He stood behind the fly, clapped his hands and the fly took off in about 0.1 seconds, one fourth of a human’s reaction time. He then tried different angles of his hands and other combinations for position and noise; still 0.1 seconds. He dutifully recorded his findings.
Next he pulled off a leg, then two legs, etc. and still the fly would take off as quickly.
Then he pulled off the fly’s wings, clapped his hands, and the fly didn’t jump. Wanting to be a thorough scientist he ran the experiment a few more times, got the same results and entered them in his experiment log.
After carefully considering his results he wrote his conclusion:
When the fly’s wings are removed he goes deaf.