Click here and press the right key for the next slide (or swipe left)
also ...
Press the left key to go backwards (or swipe right)
Press n to toggle whether notes are shown (or add '?notes' to the url before the #)
Press m or double tap to slide thumbnails (menu)
Press ? at any time to show the keyboard shortcuts
What is the meaning of ‘Earth’?
Simple idea: ‘Earth’ means Earth.
The meaning of an utterance of a word is the thing it refers to.
Q1. If we take this view of meanings, can we explain the first fact in need of explanation?
Q2. Is there anything meanings are needed to explain which we cannot explain if we take this view of them?
Siegel & Shuster, 1939 (Issue 1)
Lois knows that ‘Superman is superman’ is true.
Lois does not know that ‘Clarke Kent is superman’ is true.
A Simple Observation
1. ‘Superman’ means Superman.
2. ‘Clarke Kent’ means Clarke Kent.
but:
3. Superman is Clarke Kent
therefore (from 2 & 3):
4. ‘Clarke Kent’ means Superman.
therefore (from 1 & 4):
5. ‘Clarke Kent’ and ‘Superman’ do not differ in meaning.
Fact in need of explanation:
Lois knows that ‘Superman is superman’ is true;
but
Lois does not know that ‘Clarke Kent is superman’ is true.
Postulates about meaning:
‘Superman’ means Superman.
‘Clarke Kent’ means Superman.
Principle:
What makes a sentence true somehow depends on what its constituent words mean.
Contrast ‘Superman is Superman’ with ‘Clarke Kent is Superman’
ftbe: Lois may know that one is true but not that the other is.
idea: This difference is due to some difference in the meanings of the words ‘Superman’ and ‘Clarke Kent’.
There could be no such difference if the meaning of a word were merely the thing it refers to.
Conclusion: the meaning of a word is not, or not only, the thing it refers to.
What is the meaning of ‘Earth’?
Simple idea: ‘Earth’ means Earth.
The meaning of an utterance of a word is the thing it refers to.
Q1. If we take this view of meanings, can we explain the first fact fact in need of explanation?
Q2. Is there anything meanings are needed to explain which we cannot explain if we take this view of them?