[Kubikali]

There’s this Belgian scientist doing research on frogs.
He places the frog in front of him and frightens him with a yell. The frog leaps 4 meters.
The scientist records that a frog with four legs jumps four meters>>
He cuts off one leg and places the frog in front of him and frightens him with a yell. The frog leaps 3 meters. After the frogs jumps the scientist records that a frog with three legs jumps three meters>>
He cuts off another leg and places the frog in front of him again and frightens him with a yell. The frog leaps 2 meters. After the frogs jumps the scientist records that a frog with two legs jumps two meters.>>
He cuts off a third leg and places the frog in front of him and frightens him with a yell. The frog leaps 1 meter. After the frogs jumps the scientist records that a frog with one leg jumps one meter.>>
The scientist cuts off the fourth leg, frightens the frog which does not move. He tries again, but still no reaction.>>
The scientist concludes: a legless frog is deaf.>>