A biologist was interested in studying how far bullfrogs can jump. He brought a bullfrog into his laboratory, set it down, and commanded:
- Jump, frog, jump!
The frog jumped across the room.
The biologist measured the distance, then noted in his journal:
- Frog with four legs jumped eight feet.
Then he cut the frog's front legs off. Again he ordered:
- Jump, frog, jump!
The frog struggled a moment, then jumped a few feet.
After measuring the distance, the biologist noted in his journal:
- Frog with two legs jumped three feet.
Next, the biologist cut off the frog's back legs. Once more, he shouted:
- Jump, frog, jump!
The frog just lay there.
- Jump, frog, jump! - the biologist repeated.
Nothing.
The biologist noted in his journal:
- Frog with no legs - lost its hearing.