The Digression 85 What is Truth?

A person in front of a prism representing the contrast between a natural landscape and digital code

‘Just tell me the truth!’ – A phrase that we can easily utter, but which poses a huge mystery to us. Because reality just happens – the rain out there is neither true nor false, it's just there. Truth only arises when we humans try to translate this reality into language, numbers or models.

In this episode, the abrasions Let us dissect the concept of ‘truth’ methodically. Why are mathematical truths always dependent on preconditions? Why does scientific honesty not mean absolute certainty, but the transparent disclosure of measurement uncertainties? And where is the boundary between our real, subjective experience and an intersubjectively verifiable fact?

We wonder why our own feelings sometimes deceive us, why consensus is not a substitute for evidence and why a statement can be literally true and yet highly manipulative (keyword: Framing). In the end, a five-step critical toolbox is waiting for you, with which you can test assertions in everyday life. Because in the end: Dealing responsibly with truth does not mean having an immediate answer to everything – but a clean separation between what we know, what we believe and what we simply do not yet know.

Knowledge pyramid: Rise of chaotic data about information, knowledge and understanding to radiant wisdom

Breakdown of topics

1. The entry: The dilemma with a big word

  • The everyday phenomenon: How we use the word ‘truth’ on a daily basis (‘Tell me the truth’, ‘Scientificly proven’, ‘My truth’).
  • Truth vs. reality:
    • The reality: What exists and happens independently of us (e.g. the rain).
    • The truth: A characteristic of our statements, figures and models about this reality.
  • The term check (the demarcation):
    • Truth: Consistency of a statement with reality.
    • Knowledge: A true statement based on reliable evidence – without the claim of absolute infallibility.
    • Certainty: The purely personal sense of security (Can be deceiving!).
    • Honesty: Tell them what you think is true.Does not protect against error).
    • The spectrum of deception: The subtle differences between lies, error, misinformation and deception.

2. Block I: Logic, Prerequisites & Natural Science

  • Mathematical Truth (The World of Systems):
    • Truth through logical derivation from axioms.
    • The triangle example: Why $180^\circ$ angular sum on a flat plane and $270^\circ$ on a ball are not a contradiction, but depend on the prerequisites.
    • The nerd excursion (Kurt Gödel): Why formal provability and truth are not completely identical even in mathematics.
  • Physical Truth (The World of Models):
    • Science does not prove absolutely, but seeks empirical evidence through measurement and experimentation.
    • The Newton-Einstein example: Theories as provisionally best approximations within certain limits.
    • The measurement uncertainty: Why scientific honesty means making uncertainties transparent and measurable (criterion of falsifiability).

3. Block II: The Philosophical Toolbox

  • The three perspectives on statements:
    • Subjective: The purely personal experience ("I'm cold").
    • Lens: Applicable independently of the person (‘It is 17 °C’).
    • Intersubjective: Under common rules for several people comprehensible (Testing with calibrated thermometers).
  • The classical truth theories in the hardness test:
    • Correspondence: The direct correspondence with reality (the cup on the table – measured with the theodolite).
    • Coherence: The freedom of contradiction in a system (The circumstantial puzzle). The problem: Even a crime novel can be perfectly logical, but freely invented.
    • Pragmatism: Permanent probation in practice. The problem: A lucky charm can really calm down without possessing supernatural powers.
    • Consensus: The agreement of reasonable parties under ideal, non-compulsory conditions (consensus as an indication, not as a substitute for evidence).

4. Block III: Everyday life, media & social power

  • My Truth vs Interpretation: Why feelings (like fear at night) are real as an experience, but the interpretation of their cause (the cat vs. the burglar) can still be wrong.
  • Social constructs (institutional reality): Why things like money, borders or property do not exist out of mere fantasy, but because we institutionally secure them and collectively act on them.
  • Legal vs. historical truth: The disparity between what actually happened and what can be considered proven in court proceedings under strict rules (e.g. acquittal for lack of evidence).
  • Framing (the manipulative truth): Why one does not have to explicitly lie in order to distort the truth (The example of ‘100%increase from 1 to 2 cases).
  • Truth and Power: How power structures influence which versions of reality are publicly visible, disseminated and socially recognized.

5. The final: The critical toolbox for practice

  • The 5 test questions for everyday life:
    1. What kind of statement is that? (Fact, opinion, feeling, interpretation or prognosis?)
    2. How can it be tested? (Are there data, documents or intersubjective procedures?)
    3. How reliable is the source? (Is there self-interest or independent confirmation?)
    4. What uncertainty remains? (Have gaps been openly identified?)
    5. What information could change my mind? (The test against one's own Confirmation Bias).
  • Final thought: A plea for clean separation in one's own head: What do I know? What do I suspect? What did I feel? And where can I honestly say: I don't know yet.
  • Interaction / Call to Action: The final questions to listeners for discussion in the comments.



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Anzahl der Downloads: 276
Playing time: 0:33:47
Date of admission: 19.07.26
This episode is from season 4, there are a total of 4 seasons.


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Author: Sascha Markmann

Sascha Markmann ist ein kreativer Kopf mit einer bewegten Biografie – und ein Mensch, der das Leben nach einem Schlaganfall noch einmal ganz neu für sich entdeckt hat. Nach Stationen als Rettungssanitäter und Altenpfleger fand Sascha seinen Weg in den kreativen Ausdruck. Als Blogger, Podcaster, Musiker und visueller Geschichtenerzähler bringt er heute Dinge zusammen, die nur auf den ersten Blick nicht passen: Er kombiniert seine handfeste Begeisterung für Technik – von selbst gehosteten Servern bis hin zur elektronischen Musikproduktion – mit emotionaler Tiefe und einem schrägen Sinn für Humor. Seine Beiträge entstehen irgendwo zwischen Borderline, Acid Basslines und Beistand – ehrlich, direkt und gerne auch mal mit einem Augenzwinkern. Leitmotiv: „Audiovisueller Stumpfsinn mit keinem Nutzwert – aber vielleicht genau deshalb so wertvoll.“

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