Good Morning,
Although the post initiating this thread was too absurd to warrant response, I find Brian Bean's suggestion that if conclusive proof of Shakespeare's identity existed, controversy on the subject would be silenced, an entirely engaging hypothesis. Unfortunately, recent history and on-going research illustrate that Brian's hypothesis is incorrect.
News reports in the United States (my home) show that people have a remarkable ability to dismiss and misrepresent conclusive proof that challenges their deeply held beliefs--even when those beliefs have been demonstrated to be objectively false, and even when those who generated false statements publicly and unambiguously refute them. For example, while George Bush, Dick Cheney, etc., now admit that there was no link between Saddam Hussein and 9/11, many Americans refuse to accept that fact. Large numbers of otherwise rational Americans also believe in UFO abductions, fake moon landings, creation science, and the "fact" that President Obama was born in Kenya, is a secret Marxist/Nazi/homosexual/racist, and wants to kill their grandparents.
What is the reason for this massive cognitive distortion? Research by Prasad, Perrin, Bezila, Hoffman, Kindleberger, Manturuk, and Smith (2009) provides a "social psychological" explanation for the persistence of false beliefs. In their abstract, Hoffman writes:
The primary causal agent for misperception is not the presence or absence of correct information but a respondent's willingness to believe certain kinds of information. (p. 2)
Hoffman concludes that people tend to seek out and accept confirming information, regardless of its quality or objectivity, while discrediting contradictory information.
This suggests that the presence of controversy around a particular issue should not lead people to argue,
ipso facto, that compelling evidence exists to support contrary opinion. Even highly educated people, doctors, lawyers, scientist, etc., are willing to suspend critical thinking in favor of "inferred justification" a pattern of fallacious reasoning in which a person begins with a strongly held belief (e.g., Shakespeare was Italian) and performs all manner of mental gymnastics to confirm it. This phenomenon also explains why a deeply religious biologist can deny evolution, or a committed Republican can deny birth records.
In other words, while the presence of smoke usually indicates fire, the presence of controversy may simply be a sign of foolishness.
Prasad, M., Perrin, A., Bezila, K., Hoffman, S., Kindleberger, K., Manturuk, K., et al., (2009). “There Must Be a Reason”: Osama, Saddam, and Inferred
Justification.
Sociological Inquiry.