Author Topic: I am lying!  (Read 16526 times)

Offline abyaly

  • Bot Destroyer
  • ***
  • Posts: 363
    • View Profile
I am lying!
« Reply #45 on: December 10, 2008, 07:44:35 PM »
These are equivalent:
- "A = 'A -> B'" is a valid statement
- B is universally true


Quote
aren't you just saying the paradox all over again?
Quote
So are you saying the paradox is correct?
No to both of these.
Quote
You seem to be admitting that B must be true, even though we haven't even defined what it is.
Once we know what B is, we will know whether or not B is universally true. When that happens, we will know whether or not "A = 'A -> B'" is in the statement set. Although in the case that B is universally true and "A = 'A -> B'" is in the statement set, we end up with A = B = T.
Lancre operated on the feudal system, which was to say, everyone feuded all
the time and handed on the fight to their descendants.
        -- (Terry Pratchett, Carpe Jugulum)

Offline jknilinux

  • Bot Destroyer
  • ***
  • Posts: 468
    • View Profile
I am lying!
« Reply #46 on: December 11, 2008, 12:11:48 AM »
Please define universally true. Is this synonymous with being tautologous?

Offline abyaly

  • Bot Destroyer
  • ***
  • Posts: 363
    • View Profile
I am lying!
« Reply #47 on: December 11, 2008, 08:21:14 AM »
"Universally true" is a name of the proposition T.
Yes. It's synonymous.
Lancre operated on the feudal system, which was to say, everyone feuded all
the time and handed on the fight to their descendants.
        -- (Terry Pratchett, Carpe Jugulum)

Offline jknilinux

  • Bot Destroyer
  • ***
  • Posts: 468
    • View Profile
I am lying!
« Reply #48 on: December 11, 2008, 12:57:31 PM »
So, you're saying B is tautologous, so B must always be true. To me, that's the paradoxical conclusion.

Offline Numsgil

  • Administrator
  • Bot God
  • *****
  • Posts: 7742
    • View Profile
I am lying!
« Reply #49 on: December 11, 2008, 05:11:50 PM »
no, he's saying that what you're saying is that B is tautological.

Offline abyaly

  • Bot Destroyer
  • ***
  • Posts: 363
    • View Profile
I am lying!
« Reply #50 on: December 11, 2008, 10:22:16 PM »
Quote from: abyaly
These are equivalent:
- "A = 'A -> B'" is a valid statement
- B is universally true
Consider each sentence preceded by a - to be a proposition. They are equal.
« Last Edit: December 11, 2008, 10:23:37 PM by abyaly »
Lancre operated on the feudal system, which was to say, everyone feuded all
the time and handed on the fight to their descendants.
        -- (Terry Pratchett, Carpe Jugulum)

Offline jknilinux

  • Bot Destroyer
  • ***
  • Posts: 468
    • View Profile
I am lying!
« Reply #51 on: December 12, 2008, 02:00:06 AM »
Oh, I understand now.

Dang- you might have solved it.

Awwww...... You broke my paradox!