Introduction
A case study is a social experiment that experts from different disciplines use to collect valuable data. This data is useful to make precise projections and understand the dynamics that may have direct or inverse propositional relation to phenomenon in question. On the whole there are no restrictions for performing a case study. However, with experience and knowledge the experts have consented to determine a few guidelines that may increase the credibility of the procedure. At first glance a case study may seem like a harmless and very dependable method of calibration. However, science and facts do not account for emotions and manmade laws. Plus, on the other hand, case study may not be reliable under many circumstances.

Advantages or Pros of the Case Study:
The human mind has made a great journey on the brain stand more than on an anatomical level. During the thousands of years of existence we have not developed wings but we have worked on something far more valuable. Our brains are the super powers that are constantly observing the environment all around and we do not watch and forget bur rather watch and learn. Many creatures have the power of observation other than human beings and some of them have much better optical sensor. However, human beings are the only creatures who are able to differentiate between illusion and trustworthy facts. The case study is an evolved form of observation that allows the human beings to grasp the root cause of the cause and effect. With the help of power of calibration we have removed or minimized the margin of error. The case studies are much more than mere myths. They allow the experts to collect information and convey it in practical and evidence backed shape.

Disadvantages of Case Study:
The power of observation is as captivating as it is deceiving. There are countless variables that are connected to the phenomenon of the collecting the said information base. However, under most controlled environments the experts may not be able to replicate the conditional circumstances that are required for the case study. The nature and behaviors of people are subject to shift without any visible external changes. The mere climate change can wholly reverse the direction of a case study.

These variables can be eliminated by taking them into consideration. However, the conductors may not have the aptitude and the results of the case solution may be biased or tempered. On the other hand, the several case studies are misquotes in fragments and out of contexts. Many times, writers, small infomercials, and even big corporations may misuse the case study results to drive a point home. Before a case study is considered as evidence it is important that variables are accounted and factorized.

Conclusion
Case studies have been an important part of learning evolution. They are applied for corporate and other academic studies heavily even today. However, it is best to understand the case studies have their limitation and become obsolete after a passage of time.