Alex woke up after dawn. He checked all his cultures of bacteria on a bench in a corner of his untidy laboratory.

“Why you are here?” Alex was startled to see that the mould contaminated one culture.
“Alex, your lab is untidy. You work carelessly. I am fungus and I can live here. Thanks for your untidiness!” The Mould said.
“You have destroyed my bacteria!”  Alex was disappointed with the accident.
Alex was unlucky. The existence of the mould in the culture was out of procedure. It could make Alex fail.
The mould had destroyed the colonies of bacteria, which had surrounded it.  
“The colonies cannot live with me. We don’t match,” said the mould.

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“You fail, Alex! The mould is not supposed to be here!” The colonies said.
Alex saw that other colonies in other culture plates without that mould were normal.
“Hey, Mould! The colonies cannot live with you. You can destroy them. I have something. You can help us. You can help people,” said Alex.
“Now, let me check you, mould!” Alex checked the mould with his microscope.
“What are you doing Lex? You have failed,” said the Microscope.
“I have found something.”
“You are genius, Lex. You do not give up. You find something valuable in your failure. You change the failure into discovery. Congratulation!” Microscope said.

The failure becomes bless. The accidental existence of the mould inspired Alex to discover something that would change the course of history. Alex identified the mould as Penicillium Notatum, which had produced what we now call Penicillin. Alexander Fleming discovered Penicillin as antibiotic agent. The discovery has altered forever the treatment of bacterial infections. Penicillin is one of the first antibiotic agents. It is one of the most widely used antibiotic agents.