Dr.Franklin wrote:
"In philosophy and law and science theres the concept that purely philosophical evidence isnt even evidence. "
Says who? You?
Yes — there are several serious philosophers and scientists of knowledge who argue that *purely a priori philosophical arguments* are weaker than empirical evidence, or in some cases should not count as evidence about reality at all unless tied to observation, prediction, or experience.
A few strong sources you could cite depending on how strong you want the claim to be:
* David Hume
Hume famously argued that claims about the world ultimately depend on experience, not pure reason. In *An Enquiry Concerning Human Understanding*, he sharply criticizes metaphysical speculation detached from empirical evidence.
One famous line:
> “Commit it then to the flames…”
> referring to works containing neither abstract reasoning about quantity nor experimental reasoning about matters of fact.
* Karl Popper
Popper argued that philosophical or scientific claims that cannot in principle be falsified by evidence are not genuinely scientific knowledge. He did not reject philosophy entirely, but he denied that unfalsifiable reasoning should be treated like empirical evidence.
* W. V. O. Quine
Quine attacked the idea that there is a sharp divide between analytic truths and empirical truths. His paper “Two Dogmas of Empiricism” is hugely influential in undermining confidence in purely conceptual philosophical certainty.
* Bertrand Russell
Russell increasingly moved toward empiricism and scientific realism later in life, emphasizing that philosophy without connection to evidence becomes speculative.
* Daniel Dennett
Dennett often argued that philosophy should work continuously with cognitive science, neuroscience, and evolution rather than rely on armchair intuitions alone.
* Sean Carroll
A modern example. Carroll explicitly argues that purely philosophical arguments cannot establish facts about physical reality without empirical grounding.
Probably the most academically precise formulation close to your statement is something like:
> “Conceptual or philosophical reasoning alone is insufficient to establish factual claims about external reality without empirical support.”
That position is associated broadly with empiricism, logical positivism, scientific naturalism, and parts of analytic philosophy.
But there’s an important nuance:
Most philosophers would *not* say philosophical arguments are “not evidence” in every sense. Rather, they would say:
* they can clarify concepts,
* reveal logical contradictions,
* explore implications,
* or shift probability,
but they are usually weaker than direct empirical confirmation when discussing the actual structure of reality.
So if you want the strongest academically defensible wording, I’d avoid:
> “Philosophical arguments are not evidence.”
and instead use:
> “Purely philosophical arguments, without empirical support, are generally considered insufficient to establish factual claims about reality.”
That position has substantial support in modern philosophy of science and empiricist traditions.
Yes. In both science and law, there are authoritative traditions emphasizing that argument alone is weaker than empirical or evidentiary support.
For science:
* Carl Sagan
Famously:
> “Extraordinary claims require extraordinary evidence.”
That line captures the scientific norm that logical possibility or philosophical coherence is not enough.
* Richard Feynman
Feynman repeatedly emphasized that nature — not reasoning elegance — is the final judge:
> “It doesn’t matter how beautiful your theory is… if it doesn’t agree with experiment, it’s wrong.”
That is one of the clearest scientific statements subordinating philosophy/theory to empirical verification.
* Francis Bacon
Often considered the father of empiricism and the scientific method. Bacon argued systematic observation and experimentation must ground knowledge claims.
* National Academy of Sciences
Their descriptions of science consistently define scientific knowledge as evidence-based, testable, and observational rather than purely speculative.
For law, the distinction is even clearer:
Courts generally do *not* treat philosophical reasoning alone as evidence. Evidence usually means testimony, documents, physical evidence, expert analysis, or observable facts.
A few strong legal anchors:
* Daubert v. Merrell Dow Pharmaceuticals, Inc.
This is probably your strongest legal citation.
The Supreme Court held that expert claims must be scientifically grounded and testable, not merely speculative or theoretically asserted. The Daubert standard emphasizes:
* testing,
* peer review,
* error rates,
* and general acceptance.
In other words, reasoned argument alone is insufficient for scientific reliability in court.
* Federal Rules of Evidence
Especially Rule 702 on expert testimony:
expert opinions must rest on “sufficient facts or data” and “reliable principles and methods.”
* Oliver Wendell Holmes Jr.
Holmes often emphasized practical consequences and real-world experience over abstract metaphysics in jurisprudence.
You could synthesize these into a very defensible proposition like:
> “In both modern science and law, theoretical or philosophical coherence alone is generally not treated as sufficient evidence for factual claims without empirical, observational, or demonstrable support.”
That would be difficult to dismiss as fringe or anti-philosophical because it reflects mainstream evidentiary standards in both disciplines.