|
|
Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
|
OP
Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
The term ipse dixit is the Latin equivalent of the Greek autos epha,
referring to Pythagoras, as in, The master (Pythagoras) said it so it must
be true and no proof is needed. In our modern world, this has many forms:
Child: Why do I have to go to bed at eight every day?
Parent: Because I said so.
Employee: Why do we have to do this project if it's going to be scrapped anyway?
Boss: Because I said so.
An appeal to authority also known as argument from authority, argumentum ad verecundiam (Latin: argument from modesty) or ipse dixit (Latin: he himself, said it), is one method of obtaining propositional knowledge.
|
|
|
|
|
Joined: Mar 2000
Posts: 6,511
Carpal Tunnel
|
|
Carpal Tunnel
Joined: Mar 2000
Posts: 6,511 |
What's the difference in the usage of ipse dixit and quod erat demonstratum?
|
|
|
|
|
Joined: Dec 2000
Posts: 13,803
Carpal Tunnel
|
|
Carpal Tunnel
Joined: Dec 2000
Posts: 13,803 |
Ipse dixit would be said after a successful Proof by Blatant Assertion, quod erat demonstrandum after a real proof.
|
|
|
|
|
Joined: Jun 2002
Posts: 1,624
Pooh-Bah
|
|
Pooh-Bah
Joined: Jun 2002
Posts: 1,624 |
Yup. "Because he says so" ain't QUITE "this is proven".
|
|
|
|
|
Joined: Apr 2000
Posts: 3,065
Carpal Tunnel
|
|
Carpal Tunnel
Joined: Apr 2000
Posts: 3,065 |
Actually quod erat demonstrandum doesn't mean 'this is proven', it means 'which was to be proved", i.e., this is what we had to prove. It implies 'and now we have proved it' but it doesn't mean that.
Bingley
Bingley
|
|
|
|
|
Joined: Mar 2000
Posts: 315
enthusiast
|
|
enthusiast
Joined: Mar 2000
Posts: 315 |
indeed, quod erat demonstrandum is usually said/written immediately after the last sentence in a proof, in which we have finished to prove what we had to prove
|
|
|
|
|
Joined: Jun 2002
Posts: 1,624
Pooh-Bah
|
|
Pooh-Bah
Joined: Jun 2002
Posts: 1,624 |
I know, I know. But the "truth" didn't fit what I wanted to say exactly, so I newsmediaed it.
|
|
|
|
Forums16
Topics13,915
Posts229,837
Members9,197
| |
Most Online3,341
Dec 9th, 2011
|
|
|
0 members (),
596
guests, and
6
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
