Science doesn't know everything

{{logicnav}}{{cquote|<nowiki>[</nowiki>[[Astrology|Astrologers]] will tell you<nowiki>]</nowiki> things like: "[[Science]] doesn't know everything." Well, of course science doesn't know everything. But because science doesn't know everything, that doesn't mean science knows nothing. Science knows enough for us to be watched by a few million people now on television, for these lights to be working, for quite extraordinary miracles to have taken place in terms of the harnessing of the physical world and our dim approaches towards understanding it.|||[[Stephen Fry]]<ref>http://www.youtube.com/watch?v=-hnABeM2I7c</ref>}}
'''"Science doesn't know everything"''' (also '''"Science can't explain X"'''{{efn|"X" here may be anything for which science currently has no explanation, something for which there are several competing explanations with no [[Scientific consensus|consensus in the scientific community]], or even robust fields of study that consistently provide reliable results, such as [[radiometric dating]], which are then misrepresented by opponents to be riddled with error.}}) is an [[argument]] that asserts that, because of science's ''lack'' of knowledge about something, something else must be [[Truth|true]]. The implication is that, because science does not have an answer (or a sufficiently good answer) already, any claim can take its place, even though it has no supporting [[evidence]]. The argument is closely linked to the [[Science was wrong before]] and [[God of the gaps]] arguments.

The argument is overused by [[woomeister]]s and [[theist]]s alike, and is used to disparage the application of [[scientific method]]s to problems under discussion or analysis. 

The argument is an [[informal fallacy]] and a prime example of an [[argument from ignorance]]. Now keep in mind that '''of course''' science does not know everything, scientists admit that. 

==Common forms==
Generally the argument follows one of the two following forms:
{{syl
|2=If science can't explain X, then X is true.
|4=Science can't explain X.
|5=C|6=X is true.}}

or:
{{syl
|2=If science can't explain X, then Y is true.
|4=Science can't explain X.
|5=C|6=Y is true.}}

This is an informal fallacy, because the conclusion does follow if the premises are true. Just because science can't explain something, doesn't mean it's true.

Occasionally the arguer will forget/imply the first premise, for a ([[Formal fallacy|formally fallacious]]) form of:
{{syl
|2=([[Enthymeme|unstated]]) If science can't explain X, then X is true.
|4=Science doesn't know everything.
|5=C|6=X is true.}}

Common usage has, rather than "X is true", an [[equivocation]] of "is true" with "is likely true", "could be true" or "[[negative proof|you can't prove it isn't true]]".

==Woo-peddling==
{{cquote|Science knows it doesn't know everything; otherwise, ''it'd stop''… But just because science [[Apex fallacy|doesn't know everything]] doesn't mean you can ''[[Argument from ignorance|fill in the gaps]]'' with [[God of the gaps|whatever fairy tale most appeals to you]].|||{{wpl|Dara Ó Briain}}<ref>[http://en.wikiquote.org/wiki/Dara_%C3%93_Briain#Dara_.C3.93_Briain_Talks_Funny:_Live_in_London_.282008.29 WikiQuote]</ref>}}
Skeptico provides the following example:<ref>[http://skeptico.blogs.com/skeptico/2005/12/the_appeal_to_s.html The appeal to "science doesn't know everything"], Skeptico</ref>
{{quotebox|Hundreds of years ago we didn't know radio waves existed, but they obviously did exist, so how do you know "[[qi]]" (or whatever woo idea they are promoting) does not exist today?}}

The answer is that we ''don't'' know. But "how do you know 'qi' does not exist?" is the wrong question. The right question is, "Is there any evidence for 'qi'?" The lack of a scientific answer does ''not'' imply that the alternate answer is more true.

Often, [[paranormal]] activists follow the following formula:
{{syl
|2=If X is [[Unfalsifiable|nontestable]], then science cannot explain X.
|4=X is nontestable.
|5=C|6=X is true.}}

It is true that something untestable is outside of science, because the scientific method relies on testing. This is a favorite of [[psychics]] and others with supposed paranormal abilities, because if their abilities ''don't'' work when they're being tested, then they can claim that their "abilities" don't work "on demand" — meaning that they operate based on some mysterious, untestable principle. However, if something is truly untestable, then this means that it follows ''no'' rules. It can happen at any time, to anyone, anywhere, for any reason, with ''any'' effect. And if something is as random as that, then it's probably not even possible to know about it. And, ultimately, just because science can't ''disprove'' something doesn't mean that it's true.

==God of the gaps==
{{main|God of the gaps}}
Some [[theist]]s think that if science can't explain something, it follows that [[God]] is the explanation.

Often they're looking to force you to admit that science ''doesn't'' know everything, and from there admit that God could exist, with heavy implications that (their) God ''does'' exist. Alternatively, they may be an [[IDiot]], and the next step in their "logic" is "therefore science doesn't know ''anything''." It's a form of [[moving the goalposts]], in this case moving them to the absolute farthest place possible.

The argument often follows the form:
{{syl
|2=Science doesn't know X.
|4=Anything science doesn't know it will ''never'' know.
|5=C1|6=Science will ''never'' know X.
|7=C2|8=[[Goddidit|God did it]].}}

The first step presumes that science has already explained everything that it is capable of explaining, which is patently false. This matches up with the other common rhetorical phrase "science doesn't know everything", which as Dara Ó Briain pointed out is not a problem because science's job is to ''find'' answers, not have them '''all''' already: if it did have all the answers to everything, science would come to an end, because science is a process for exploring the world, not a bare catalog of facts. The phrase is also frequently based on misrepresenting the current state of knowledge in a particular field when in fact science does provide a satisfactory explanation. Lies of this nature, like those advanced by the creationist [[RATE]] project, may be predicated on misapplying legitimate scientific protocols in light of known limitations, grossly misrepresenting the nature and significance of margins of error, or simply shoddy scholarship and materials handling. 

The second and third points are blatant [[non sequitur]]s. Assuming that science will ''never'' have an explanation for a phenomenon is, at best, naïve.

Of course it is entirely possible that there are things which science will not have worked out before the [[human]] species becomes [[extinct]] or before the end of the [[Universe]]. But even in such cases that would not justify a conclusion "Therefore [the locally popular] God did it."

Typical examples of "X" in this case are the [[origin of life]] and the [[Big Bang|origin of the universe]]. They also include the [[Argument from fine tuning|constancy of physical constants]], such as the [[speed of light]] and the [[Radioactive decay|decay rates of radioactive nuclei]], over long or short periods of [[time]]. Issues of origins and the constancy and source of physical constants over time are key points in understanding the world around us and are currently cutting-edge [[biology]] and [[physics]]. Science, being at once descriptive, predictive, and adaptive to changing data and theories, can only get closer to an answer — whereas dismissing science is likely to get us ''away'' from an accurate one.

Since creationists and [[apologists]] are not too big on science, they sometimes lose track of established scientific knowledge. Their use of this kind of argument gets downright comical when they cite an alleged mystery that has, in fact, already been explained, revealing the full extent of their ignorance. For examples, see Insane Clown Posse's infamous "Miracles" video, or [[Bill O'Reilly]]'s foray into oceanography.<ref>YouTube: [http://www.youtube.com/watch?v=2BCipg71LbI Bill O'Reilly vs. Dave Silverman]</ref>

==Possible answers==
* There's no reason knowledge has to come from a source that knows everything. Your parents and teachers taught you a lot, but they didn't know everything.
* Science may not know everything, but its knowledge is growing; there may come a day when all the major questions have been answered by science.
* [[Religion]] and [[other ways of knowing]] don't know everything either, and arguably know a great deal less than science.
* That's the reason we do science in the first place: to know more than we knew before.
* Science not knowing everything doesn't free you from providing [[evidence]] for your claims.
* Science doesn't know everything, but it's really accurate for what it does know, and your claim would violate what science does know.
* The abstract concept of science itself knows absolutely nothing — science offers an approach to finding out about things. For example, [[linguistics|linguistic science]] and [[history|historical science]] and [[archaeology|archaeological science]] and {{wpl|literary science}} and the science of {{wpl|systematic theology}} can give us clues as to how we might read ancient manuscripts of sacred texts.|| rather than a sacred repository of [[dogma]]. On the other hand, humans with scientific attitudes have actually worked out a few ideas (and a few alternate ideas) that seem to explain a growing set of phenomena consistently (pending the development of better explanations).
* Another way of looking at it is to consider that over centuries as we've come to understand our world better (especially, but not only, using science), naturalistic explanations have consistently replaced [[supernatural]] ones, and supernatural explanations have successfully replaced naturalistic ones exactly zero times.<ref>http://gretachristina.typepad.com/greta_christinas_weblog/2007/01/the_unexplained.html</ref>

==Incorrect claims==
Creationists and [[anti-science]] people are also fond of saying "science can't explain X" when in fact there is a perfectly [[rational]] scientific explanation.<ref name=crackedexplained>[http://www.cracked.com/article_19205_10-famous-unsolved-mysteries-easily-explained-by-science.html 10 Famous Unsolved Mysteries Easily Explained by Science], Cracked.com</ref> Or in some cases, nobody has bothered to try and sort out the details, which isn't the same as saying it can't be explained.<ref>[http://www.centerforinquiry.net/blogs/entry/the_science_cant_explain_fallacy/ The Science Can't Explain Fallacy], Centre for Inquiry</ref> Sometimes these explanations have only been arrived at recently, which makes ignorance a little more excusable but the argument no more valid.

Examples of things that people incorrectly claim science cannot explain include:
* [[Bumblebee argument|Science can't explain how bumble bees can fly]] — actually, they flap their wings sideways creating vortexes:<ref>[https://www.livescience.com/33075-how-bees-fly.html Explained: The Physics-Defying Flight of the Bumblebee], Live Science</ref> the calculations showing they "can't" assume they fly like [[airplane]]s, when in reality they fly like helicopters.
* Science can't explain the [[evolution]] of the [[eye]] — yes it can; the eye evolved through many steps, each more useful than the last.<ref>[https://www.washingtonpost.com/news/speaking-of-science/wp/2015/12/17/debunking-the-myth-that-evolution-cant-explain-eyeballs/ Debunking the myth that evolution can’t explain eyeballs], Rachel Feltman, ''Washington Post'', 17 Dec 2015</ref>
* Science can't explain how an ancient civilisation created the dead-straight [[Nazca lines]] — they could be done with ropes and wooden posts.<ref name=crackedexplained/>
* Science can't explain how the [[pyramid]]s were made — although we can't be sure exactly how it was done, there is no shortage of ideas,<ref>{{wpa|Egyptian pyramid construction techniques}}</ref> and the ancient [[Egyptian]]s certainly had the ability to work out the necessary [[mathematics]] to make it happen.

==See also==
*[[Science was wrong before]]
*[[God of the gaps]]
*[[Scientific method]]
*[[Thomas Kuhn]]

==Notes==
{{reflist|group=note}}

==References==
{{reflist}}

{{logfal}}
[[Category:Arguments against evidence-based medicine]]
[[Category:Arguments from ignorance]]
[[Category:Clichéed sayings]]
[[Category:Creationist claims]]
[[Category:Informal fallacies]]

Categories: Arguments against evidence-based medicine, Arguments from ignorance, Clichéed sayings, Creationist claims, Informal fallacies