Wittgenstein On Certainty (1)

Preface

The material consists of the last year and a half of Wittgenstein's life.
Wittgenstein visited the United States in 1949 at the invitation of Norman Malcolm.
Malcolm stimulated Wittgenstein's interest in G.E. Moore's defense of common sense.
Common propositions explored include:
- "Here is one hand, and here is another"
- "The earth existed for a long time before my birth"
- "I have never been far from the earth's surface"
The book contains everything Wittgenstein wrote on this topic from that time until his death.
All material is first draft; he did not live to revise.
The work is divided into four parts, with section numbers assigned by the editors.
It was written at different times over 18 months and is a comprehensive discussion of the topic.

Knowledge is not the same as certainty; it involves evidence and language.
Statements can be derived from others, but this does not confer certainty on derived propositions.
Engaging in the language-game allows us to satisfy our doubts about propositions.

Doubt does not stem from personal beliefs but needs an objective framework.
Doubting the existence of one's hand, for instance, can be countered by looking closely.
The act of knowing (e.g., knowing one is a human being) can be ambiguous.

Everyday assertions (like knowing there's a chair nearby) illustrate a form of certainty grounded in life experience.
Statements like “2 × 2 = 4” hold truth outside specific contexts but can become nonsensical when misused.

Belief in another's word (e.g., about having two hands) is contingent on trust and verification.
There is a distinction between a mistake and a mental disturbance; all beliefs are not necessarily mistaken.

Language conveys knowledge. Certain phrases have specific contextual meanings and implications linked to our understanding and environment.
Knowledge forms a vast system, with some propositions exempt from doubt, forming the basis of our logical investigation.

Knowledge and belief solidify through habitual acceptance rather than continuous verification.
The idea that something stands fast is not purely a product of stupidity or credulity, but a philosophy of living.

Certainty is rooted in life experiences and the language-games we engage in.
The reliability of what we know relies on a web of assumptions that we seldom question.

Wittgenstein explores how certainty and knowledge interrelate, emphasizing the importance of context, language, and shared understanding in forming our beliefs.
The text challenges underlying assumptions about knowledge, revealing the complexities inherent in what we consider to be obvious or certain.