Apart from its entertainment value, Harold Camping’s ill-advised prediction of the rapture last month attracted me as a philosopher for its epistemological interest. Epistemology is the study of knowledge, its nature, scope and limits. Camping claimed to know, with certainty and precision, that on May 21, 2011, a series of huge earthquakes would devastate the Earth and be followed by the taking up (rapture) of the saved into heaven. No sensible person could have thought that he knew this. Knowledge requires justification; that is, some rationally persuasive account of why we know what we claim to know. Camping’s confused efforts at Biblical interpretation provided no justification for his prediction. Even if, by some astonishing fluke, he had turned out to be right, he still would not have known the rapture was coming.
Of particular epistemological interest was the rush of Christians who believe that the rapture will occur but specify no date for it to dissociate themselves from Camping. Quoting Jesus’s saying that “of that day and hour no one knows,” they rightly saw their view as unrefuted by Camping’s failed prediction. What they did not notice is that the reasons for rejecting Camping’s prediction also call into question their claim that the rapture will occur at some unspecified future time.
What was most disturbing about Camping was his claim to be certain that the rapture would occur on May 21. Perhaps he had a subjective feeling of certainty about his prediction, but he had no good reasons to think that this feeling was reliable. Similarly, you may feel certain that you will get the job, but this does not make it (objectively) certain that you will. For that you need reasons that justify your feeling.
There are many Christians who are as subjectively certain as Camping about the rapture, except that they do not specify a date. They have a feeling of total confidence that the rapture will someday occur. But do they, unlike Camping, have good reasons behind their feeling of certainty? Does the fact that they leave the date of the rapture unspecified somehow give them the good reason for their certainty that Camping lacked?
http://opinionator.blogs.nytimes.com/2011/06/16/epistemology-and-the-end-of-the-world/?nl=todaysheadlines&emc=thab1