How has the author used the episode of the bank theft to comment on Satyajit’s success in his career?

The author has represented the Satyajit’s career very well with an episode of bank theft as he showed that how a common man got the position of Manager from earlier of the clerk by making it as a key episode of the story. He also showed that speed of success is less than the speed of failure coming he got a high post by chance then destiny will teach him a lesson of failure with very fast speed. Some people got success by luck but not due to hard work same as Satyajit got the position of Manager has no values in real term. Hence this type of success ends in short time and thus author wants to explain that success through real hard work will be fruitful.