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Logical Conflict. The Logic of Disagreement. Relationships of Claims. NOT IN LOGICAL CONFLICT : Claims are not in logical conflict if they COULD be true at the same time. Note that it is not necessary that they actually be true at the same time. Relationships of Claims.

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logical conflict

Logical Conflict

The Logic of Disagreement

relationships of claims
Relationships of Claims

NOT IN LOGICAL CONFLICT: Claims are not in logical conflict if they COULD be true at the same time. Note that it is not necessary that they actually be true at the same time.

relationships of claims1
Relationships of Claims

NOT IN LOGICAL CONFLICT: Claims are not in logical conflict if they COULD be true at the same time. Note that it is not necessary that they actually be true at the same time.

IN LOGICAL CONFLICT: Claims are in logical conflict if they COULD NOT be true at the same time. If claims are in logical conflict, it is necessary that at least one of them be false.

claims that are not in conflict
Claims that are not in conflict:

Claims are not in conflict if they COULD be true at the same time.

claims that are not in conflict1
Claims that are not in conflict:

Claims are not in conflict if they COULD be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the third President of the U.S.

claims that are not in conflict2
Claims that are not in conflict:

Claims are not in conflict if they COULD be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the third President of the U.S.

a) It’s over 60 degrees today.

b) It’s over 80 degrees today.

claims that are not in conflict3
Claims that are not in conflict:

Claims are not in conflict if they COULD be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the third President of the U.S.

a) It’s over 60 degrees today.

b) It’s over 80 degrees today.

a) Arnold is a politician.

b) Arnold is an actor.

claims that are in conflict
Claims that are in conflict:

Claims are in conflict if they COULD NOT be true at the same time.

claims that are in conflict1
Claims that are in conflict:

Claims are in conflict if they COULD NOT be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the first President of the U.S.

claims that are in conflict2
Claims that are in conflict:

Claims are in conflict if they COULD NOT be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the first President of the U.S.

a) It’s over 60 degrees now.

b) It’s 60 degrees or cooler now.

claims that are in conflict3
Claims that are in conflict:

Claims are not in conflict if they COULD be true at the same time.

a) Washington was the first President of the U.S.

b) Jefferson was the first President of the U.S.

a) It’s over 60 degrees now.

b) It’s 60 degrees or cooler now.

a) Arnold is a politician.

b) Arnold is not a politician.

especially about contraries
Especially about Contraries

The “all-or-nothing” pattern

a) Everybody cares about taxes.

b) Nobody cares about taxes

especially about contraries1
Especially about Contraries

The “all-or-nothing” pattern

a) Everybody cares about taxes.

b) Nobody cares about taxes

The false dilemma

Either we drive across the country or we fly.

especially about contraries2
Especially about Contraries

The “all-or-nothing” pattern

a) Everybody cares about taxes.

b) Nobody cares about taxes

The false dilemma

Either we drive across the country or we fly.

Perfectionism

If we can’t do it perfectly, we won’t do it at all.