A marine biologist put a shark into a big tank at the time of a research experiment. Following that, he released some tiny bait fish into it.
As expected, the shark didn’t wait to attack those fish and ate them. Later, clear Fiberglas was inserted into the tank, partitioning it into two, while the shark remained on one side.
A similar set of bait fish was sent to the other side of the tank, as before. The shark attempted to attack those fish but failed by hitting the fibreglass. The shark attempted for several days until it gave up. Later, the biologist removed the glass from the tank, but the shark didn’t try to attack the small fish.
The shark always continues to see a false barrier in the tank and stops his attempts.
Moral: It is quite common for many people to give up after many setbacks and failures. The story is an example of trying always and never giving up despite multiple failures.
