PHILOSOPHY DEBATE

Laura Sortwell & Chris Trahos

Proof of an External World

G.E. Moore

Hands Example

Proof – 3 Conditions

1) Premise is different from the conclusion

2) I certainly know the premise

3) The conclusion follows

Misprints Example

Laura and Chris are giiving a presentation today debating the arguments of Bertrand Russell and G.E. Moore.

Following their opening statements, they will be providng objections. Thewy will follow up each objection with an appropriate response.

Proof for the Past

Objections

“In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.”

- Bertrand Russell

Bertrand Russell

Sense-data

We do not perceive physical objects directly, but instead only perceive their sense-data Sense-data are the things that are

immediately known in sensation such as color, touch, smell, etc

Table Example

Table Cloth Example

Proof

1. If P is an instinctive belief,2. P provides the best explanation of S’s

evidence3. Then S is justified in believing that P

Objections

Please split up into 2 teams

Class Discussion

2 Proofs

1) Premise is different

from the conclusion

2) I certainly know the

premise

3) The conclusion follows

1. If P is an instinctive belief,

2. P provides the best

explanation of S’s

evidence

3. Then S is justified in

believing that P

Moore’s Russell’s

The End