1. Dialectic cam look much like debate. The difference lies in

1. The aim of inquiry as opposed to victory
2. the character of the participants
3. the quality of the arguments

2. the conclusion of an argument is

1. the final word
2. the claim the premises aim to support
3. the reason for believing the premises

3. an argument is valid if and only if

1. if its premises are true then its conclusion must be false
2. if its premises are true then its conclusion must be true
3. its premises are true and its conclusion must be true

4. an argument is sound if

1. it sounds good
2. it is true
3. it is valid and has all true premises

5. if it rains too much, the wheat harvest will be ruined. The wheat is ruined.

Therefore it rained too much.

This argument is

1. invalid
2. valid
3. sound