#edmund-gettier

#edmund-gettier

Witnessing the presence of God at a bus stop in 2011, I felt overwhelmed by something indescribably majestic, which bared my soul to a profound realization.

The Theory of Communicative Action, his 1980s magnum opus, was not (to put it mildly) as accessible as some of his newspaper opinion pieces. But its central idea—that our nature as linguistic beings puts reason and the search for consensus at the core of who we are—remains an antidote both to intellectual relativism and Trumpian realism, which elevates national or individual self-interest above all other sources of human motivation.

This is a tough time for politics in America. But it's an extremely interesting time for those of us who wrestle with the nature of reality. As a psychiatrist who has treated people with psychosis for over 20 years, I have lived in the uncomfortable space between their experience of reality and mine and I have worked to change beliefs that are some of the most resistant to change: delusions.

In antiquity, many opined about "the elements" in combination. Around 2500 years ago, Leucippus and Democritus founded the idea of atoms. Perhaps everything, they opined, was composed of indivisible building blocks. In the late 1700s, hydrogen and oxygen were discovered. Circa 1804, John Dalton revived atomism to explain chemical behavior. Then in 1869, Mendeleev developed the periodic table: organizing the atoms.

Spinoza was an heir to both Jewish and Christian culture-in Amsterdam he grew up in a Jewish community within a Protestant society-yet he distanced himself from both these religions. He did not want to be a member of a religious institution with strict, prescriptive codes of belonging and belief. He feared-quite rightly-that a [institutional religion would constrain philosophical freedom].

In the weeks leading up to September 1891, mathematician Georg Cantor prepared an ambush. For years he had sparred - philosophically, mathematically and emotionally - with his formidable rival Leopold Kronecker, one of Germany's most influential mathematicians. Kronecker thought that mathematics should deal only with whole numbers and proofs built from them and therefore rejected Cantor's study of infinity. "God made the integers," Kronecker once said. "All else is the work of man."

Nyaya Philosophy, one of the six classical schools of Indian philosophy ( Shad-Darshanas), is known for its systematic approach to logic and epistemology. Rooted in the idea that correct knowledge (pramā) is key to liberation (moksha), Nyaya provides a structured method of reasoning and critical thinking to uncover the truth. The sage Gautama (also known as Akṣapāda) was the founder of Nyaya philosophy. He contributed significantly to the development of logical reasoning in Indian intellectual traditions around the 2nd century BCE.

Metaphors are linked to how we experience the world around us, according to seminal work by researchers George Lakoff and Mark Johnson. In English, we "move forward" with our lives and don't "retreat into" the past. We speak about people who are "cold as ice" and "heavy" matters we need to resolve. Some of these metaphorical expressions are more than just, well, expressions-they are actually based on our sensory experiences. This mind-body link is called "embodied cognition."

Ever since our ancestors first stood upright and squinted at the horizon, we've been wired to notice patterns. A rustle in the grass might have meant a stalking predator. Dark clouds often meant rain. Those who made these connections and guessed that one thing caused another tended to survive. Over time, this ability to link events became one of our most significant evolutionary advantages. It's how we built tools, tamed fire, and eventually invented Wi-Fi.

A professional philosopher outside the academy walls can act as a popularizer (the goal here is to make philosophy more accessible to the general public), an applied ethicist (the major task is to offer an analysis of various specific moral issues that arise within a society), and a public intellectual (I limit this role to questions that have political connotation). Of course, there are overlaps between these roles and they certainly do not exhaust all possible forms of public engagement of a professional philosopher.

A drawn circle is at least something physical. You can see it, touch it, erase it. The skeptic can still say, "Circles are grounded in physical reality. Justice is different; it's just an idea in your head." So let's talk about the number two. Point to it. Not two apples, not two fingers, not a numeral on a page-that's just a symbol.

Many philosophers strike me as like Polish apparatchiks in 1983-they turn up to work and do what they did yesterday just because they don't know what else to do, not because they seriously believe in the system they are maintaining. I think it's not been fully appreciated how much of a blow it is to the confidence of the field's youth that scientific ambitions are increasingly abandoned as untenable.

In my previous post, I summarized my response to Christian de Weerd, who denied that a Darwinian approach to consciousness is even possible. I argued that consciousness science has unnecessarily insulated itself from the evolutionary tools that revolutionized our understanding of every other biological phenomenon, and that treating human consciousness as the paradigm case distorts our picture of consciousness as a natural phenomenon spanning millions of species across millions of years.

In January 1986, NASA engineers knew the Space Shuttle Challenger's O-rings had never been tested in freezing temperatures. They recommended delaying the launch. Managers asked: Could the engineers prove it was unsafe? They couldn't-they could only say the system hadn't been designed for these conditions. Under pressure, the engineers withdrew their recommendation. The next morning, Challenger broke apart 73 seconds after launch, killing all seven astronauts.

For most of my life, I thought of myself as a fixed entity: This is me. These are my traits. This is who I am. I assumed I was essentially that same person who loved sugary cereal at age 8, fried chicken at 12, and tequila at 21, and who still loves those things now, even if my stomach disagrees. But this is an illusion. Neuroscience, physics, and Buddhism all agree: There is nothing fixed about us-not even close.

This APA Blog series has broadly explored philosophy and technology with a throughline on the influence of technology and AI on well-being. This month's post brings those themes into focus recounting a vital Washington Post Opinion piece by friend of the APA Blog, Samuel Kimbriel. Samuel is the founding director of the Aspen Institute's Philosophy and Society Initiative and Editor at Large for Wisdom of Crowds. We collaborated on a Substack Newsletter about intellectual ambition, building on his essay, Thinking is Risky.

Consistent with the general trend of incorporating artificial intelligence into nearly every field, researchers and politicians are increasingly using AI models trained on scientific data to infer answers to scientific questions. But can AI ultimately replace scientists? The Trump administration signed an executive order on Nov. 24, 2025, that announced the Genesis Mission, an initiative to build and train a series of AI agents on federal scientific datasets "to test new hypotheses, automate research workflows, and accelerate scientific breakthroughs."