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Single Idea 3063

[filed under theme 27. Natural Reality / A. Classical Physics / 1. Mechanics / a. Explaining movement ]

Full Idea

Motion is not moved in the place in which it is is, and it is impossible that it should be moved in the place in which it is not, so there is no such thing as motion.

Gist of Idea

Motion can't move where it is, and can't move where it isn't, so it can't exist

Source

report of Pyrrho (reports [c.325 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 09.11.11

Book Ref

Diogenes Laertius: 'Diogenes Laertius', ed/tr. Yonge,C.D. [Henry G. Bohn 1853], p.417


The 17 ideas from Pyrrho

He studied philosophy by suspending his judgement on everything [Pyrrho, by Diog. Laertius]
Sceptics say reason is only an instrument, because reason can only be attacked with reason [Pyrrho, by Diog. Laertius]
Individuals vary in responses and feelings (Mode 2) [Pyrrho, by Diog. Laertius]
Perception varies with viewing distance and angle (Mode 7) [Pyrrho, by Diog. Laertius]
Perception and judgement depend on comparison (Mode 10) [Pyrrho, by Diog. Laertius]
Judgements vary according to local culture and law (Mode 5) [Pyrrho, by Diog. Laertius]
Perception of things depends on their size or quantity (Mode 8) [Pyrrho, by Diog. Laertius]
Perception varies with madness or disease (Mode 4) [Pyrrho, by Diog. Laertius]
Perception of objects depends on surrounding conditions (Mode 6) [Pyrrho, by Diog. Laertius]
If we need a criterion of truth, we need to know whether it is the correct criterion [Pyrrho, by Fogelin]
Objects vary according to which sense perceives them (Mode 3) [Pyrrho, by Diog. Laertius]
Perception is affected by expectations (Mode 9) [Pyrrho, by Diog. Laertius]
The Pyrrhonians attacked the dogmas of professors, not ordinary people [Pyrrho, by Fogelin]
Academics said that Pyrrhonians were guilty of 'negative dogmatism' [Pyrrho, by Fogelin]
Animals vary in their feelings and judgements (Mode 1) [Pyrrho, by Diog. Laertius]
There are no causes, because they are relative, and alike things can't cause one another [Pyrrho, by Diog. Laertius]
Motion can't move where it is, and can't move where it isn't, so it can't exist [Pyrrho, by Diog. Laertius]