Tag Archives: Sagan’s Saw

Do Extraordinary Claims Require Extraordinary Evidence? Part 3

Post Author: Bill Pratt

In part 2 of this series, we started discussing Mike Licona’s analysis of Sagan’s Saw, as he calls it.  Licona offered two examples of his wife coming home from the grocery store and telling him about people she met there.  We saw that even if she told him about the extraordinary event of meeting the president of the United States, he would not require extraordinary evidence to believe her.

But how would he react if his wife told him about meeting a person that he doubts even exists?

Now let us suppose that my wife returns from the grocery store and tells me she saw and spoke with an alien.  In this instance, I have a serious tension between the evidence, which may be good, and my understanding of reality.  Should I reject the evidence or adjust my understanding of reality?

Let us also suppose that my neighbor then telephones and provides a report similar to my wife’s.  I then turn on the television and observe a number of reports of alien sightings presently taking place around the world.  If I am satisfied that the sources are credible and I am secure in my understanding of authorial intent, I may still pause, since I presently regard the existence of aliens as dubious.  But I should then reexamine my reasons for believing in the nonexistence of aliens in light of the evidence before me that they do. Perhaps I would be less hasty to reject all of the reports of alien sightings.  I should not require extraordinary evidence but additional evidence that addresses my present understanding of reality or my horizon, which may be handicapped and in need of revision.

Licona’s worldview is such that he doubts that aliens exist, but he must look more critically at that worldview given the evidence that aliens do exist.  Perhaps his worldview is wrong and it needs to be revised.  Licona argues that

The worldview of one historian does not place a greater burden on the shoulders of others.  It is the responsibility of the historian to consider what the evidence would look like if she were not wearing her metaphysical bias like a pair of sunglasses that shade the world.  It is not the responsibility of the evidence to shine so brightly that they render such glasses ineffectual.

With regard to miracle accounts,

If the evidence for the occurrence of a particular miracle is strong—that is, the historian can establish that the authorial intent of the sources is to report what was perceived as a miracle, the event occurred in a context that was charged with religious significance, the report possesses traits that favor the historicity of the event and no plausible naturalistic theories exist—then a requirement for extraordinary evidence is unwarranted.

Some historians may require additional evidence supporting supernaturalism before believing since the event is foreign to their present [worldview], but no greater burden of proof is required for a miracle-claim.  There is a difference between demonstrating the historical superiority of a hypothesis and convincing a particular historian to give up a deeply held view.

Licona summarizes:

[Sagan’s saw] fails since only additional evidence is required and that by certain historians for whom the conclusion challenges their horizon.  We observed that the evidence is not responsible for satisfying the biases of the historian; rather, the historian is responsible for setting aside his biases and considering the evidence.

In an extended footnote, Licona also looks at why Sagan’s Saw would fail even if we accepted its truth.  We will cover that material in part 4 of the series.

Do Extraordinary Claims Require Extraordinary Evidence? Part 2

Post Author: Bill Pratt

In part 1 of this series, we looked at William Lane Craig’s response to the skeptical maxim, “Extraordinary Claims Require Extraordinary Evidence.”  Now we will review Mike Licona’s response from his book The Resurrection of Jesus

Licona reminds us that this was a statement that atheist astronomer Carl Sagan used to frequently utter.  He calls it Sagan’s Saw.  How does Sagan’s Saw stand up as a paradigm for determining the burden of proof?  Licona first looks at landing on the moon.

Landing on the moon in July 1969 was an extraordinary event.  It was extremely difficult and had never occurred previously.  Yet most people believed the reports when they watched astronauts walking on the moon on their televisions, a medium that often distorts truths and presents untruths, legends and fictions.

The moon events were extraordinary.  The reports were believed because they were thought to be credible and the authorial intent to communicate the event as it occurred was known.  In neither case was extraordinary evidence required.

Licona continues by hypothesizing his wife coming home and telling him about people she met at the grocery store.  Should Licona believe his wife?

Let us suppose that my wife returns from the grocery store and tells me that she saw and spoke with our next-door neighbor while there.  Although it is possible she is mistaken, because I know her to be an intelligent and credible witness I have every reason to believe her report without hesitation. 

Now let us suppose that when she returns from the grocery store, she tells me instead that she saw and spoke with the president of the United  States.  I may think this far out of the ordinary.   However, if after questioning her further I can have confidence that she is not joking, or put another way, if I am confident that I understand her authorial intent as being truthful, I would accept her report—and drive to the grocery store with the hopes of having a similar experience, provided that I like the incumbent president.

Her claim that she spoke with the president of the United States in the grocery story is extraordinary in a sense, whereas her claim that she spoke with our next-door neighbor is not.  The former may give me pause.  Yet I am satisfied because of my confidence that the source is credible and that its authorial intent is to describe an actual event accurately.  I would not require extraordinary evidence or even evidence in addition to her report before believing that she spoke with the president of the United States in the grocery store.  Instead, I am interested in the credibility of the report and the authorial intent.

Even though Licona’s wife meeting the president at the grocery store is extraordinary, he does not require extraordinary evidence.  He simply believes his wife’s testimony because he understands her intention to describe the event accurately. 

Stories about the next-door neighbor and the president are one thing, but what would happen if Licona’s wife told him about speaking to a person that he doubts even exists, a meeting that, in his mind, is even more extraordinary than the president?  We’ll continue to analyze Licona’s reasoning in the next part of the series.