Carefully Cautiously Coming to a Wrong Conclusion

We have all experienced people like this scientist.

This scientist was conducting an experiment on a frog. He placed the frog carefully at a starting line he marked on the table.
Then he tickled the frog's butt with a feather and shouted, "jump! frog jump!"
He then carefully measured, and notated that the frog had jumped 16 inches.
He quickly snipped off the frogs two front legs.
Placed him at the starting line tickled the frog and shouted again, " Jump! frog jump!"
The frog cleared eleven inches.
So the scientist made his notation. Frog jumped eleven inches.
With an adept stroke of his scalpal He removed both back legs.
Quickly placed the frog down at the starting line once again.
Tickled the frog and shouted "Jump! Frog Jump!" ...nothing happened.... heshouted again and again and one last time. He went to his note book and wrote down his conclusion.
. "After removing all four extremities Frog goes deaf."