# Confidence margin for logical verification

I'm starting to read Wittgenstein and I keep circling around a problem, which I'll lay out with the following ideas:

a. Logical space is the totality of external reality.

b. A proposition is logical so long as it verifiable, e.g. maps onto logical space.

c. Regardless of the precision of instrumentation used to observe reality, perception will always cause some degree of distortion of external reality.

If a, b, and c are accepted, then how can any proposition be determined as logical?

Is there some kind of confidence margin that people use (consciously or not) to verify claims?

• "logical space" is an undefined concept in the Tractatus: 1.13 The facts in logical space are the world. We may say that " logical space" is the collection of all "possibilities" and that the world (the actual one) is the sub-collection of the logical space made of "actualized" possibilities: the facts. – Mauro ALLEGRANZA Mar 9 at 14:34
• A proposition is a linguistic entity: it is made of signs. As such, also a proposition is a fact of the world (see 3.143). What do you mean with "A proposition is logical so long as it verifiable..."? – Mauro ALLEGRANZA Mar 9 at 14:41
• IMO, the Tractatus is not about "perception", nor about "confidence margin" regarding eveidence supporting claims. – Mauro ALLEGRANZA Mar 9 at 14:43
• Sense for Frege is one of the two "components" of meaning; it is the thought expressed by the proposition. For W, the sense of a proposition is similar: 2.221 What a picture represents is its sense. – Mauro ALLEGRANZA Mar 9 at 14:52
• There are distinct types of truth. One is contingent truths: temporary truths like weather conditions which are not true forever. Ot is not forever raining or snowing some where on Earth. Objective truths are forever true. These are not temporary: a woman will always be a human being or it is not a woman Beliefs or opinions are not counted. Don't confuse truth with law or people in authority. Those can be seen by other people as truth. The same goes with the media. That doesn't mean truth either but some people see it as truth. You need context to discuss truth or it gets confusing . – Logikal Mar 10 at 15:17