Omission and prevention in Dowe's Physical Causation

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Transcript of Omission and prevention in Dowe's Physical Causation

“The father’s inattention was the cause

of the child’s accident”

“The father’s grabbing the child

prevented the accident”

Omission

Real occurrence

Nonoccurrence

A causes* B

A is negative Causation* by omission

B is negative Causation*

by prevention

A & B are negatives

Prevention by omission

Causation* Hybrid fact

Actual real causation

Conterfactual truths about

real causation

The conterfactual theory solves the problems that prevention and omission cause for a wide range of theories of causation

Intuition of difference: we can recognise by reflection that cases of prevention and omission are not really cases of causation. But the mistake of treating them as if they were causation doesn’t matter. E.g. › See black holes

› Killing or letting die

› Neglect (lawful)

“Drink-driving causes accidentes”

› Perhaps alcohol prevents normal functioning

(prevention)…

› which in turn causes the accident (causation

by omission)

Single positive cause:

› One positive effect &

› Infinitely many negative effects

Prevention

A caused* ┐B

Omission ┐A caused* B

[A, B being positive events]

A prevented B ≡ A caused* ┐B if:

› (P1) A ocurred and B did not,

and there ocurred and x such

that

› (P2) there is a causal relation

between A and the process

due to x, such that either

A is a causal interaction with the causal process x, or

A causes y, a causal interaction with the causal process x, and

› (P3) if A had not occurred, x

would have caused B

A

┐ B

x

y

┐ B

x A

Ejemplos de prevención

En una fría noche invernal, usted cierra

la ventana de su dormitorio para evitar

enfriarse.

Cerrar ventana

┐ Frío

Flujo de energía térmica

Ejemplos de prevención

En una fría noche invernal, usted cierra

la ventana de su dormitorio para evitar

un resfrío.

Organismo abrigado

┐ Resfrío

Virus

Cerrar la ventana

┐ A caused* B if:

› (O1) B ocurred and A did not,

and there ocurred and x such

that

› (O2) x caused B, and

› (O3) If A had ocurred then B

would not have ocurred, and

there would have been a

causal relation between A

and the process due to x, such

that either

A is a causal interaction involving the causal process x, or

A causes y, a causal interaction involving the causal process x

┐ A

B

x

┐ y

B

x

┐ A

Physically possible event

Ejemplos de omisión

Usted toma bebida con una bombilla

plástica.

Vacío

Sorber bebida

Presión atmosférica

Vacío: ausencia de choques moleculares

Ejemplos de omisión

Usted toma bebida con una bombilla

plástica.

No se confiscaron

los mariscos

contaminados

Intoxicación de

personas en un

restaurante

Venta de

mariscos

No se alertó sobre

mariscos

contaminados

Ejemplos de omisión

Usted toma bebida con una bombilla

plástica.

No se jugó el

partido

El público

quema el

estadio

Público en

el estadio

El equipo no se

presentó en la

cancha

y

┐ B

x A

┐ y

B

x

┐ A

Organismo

abrigado

┐ Resfrío

Virus Cerrar la

ventana

┐ Organismo

abrigado

Resfrío

Virus ┐ Cerrar la

ventana

┐A caused* ┐B if

› (1) Neither A nor B

ocurred, and

› (2) if A had ocurred,

A would have

caused B ┐ A

┐ B

┐A caused* ┐B if › (1) Neither A nor B

ocurred, and there ocurred and x, a y and a z such that

› (2) process z caused y, an interaction involving the process due to x, and

› (3) had A ocurred, then y would not have ocurred,

B would have ocurred, and there would be a w such that

A would have caused w, an interaction involving the process due to y, and

The process due to x would have caused B

y

┐ B

x z

┐ A

┐ y

B

x z

A w

La “intuición de la diferencia” solo indica que atribuimos ‘causalidad’ donde no la hay. Sin embargo, esta distinción solo es posible si disponemos de una noción primitiva de la causación. En el caso de Dowe, su noción de causación implica causalidad física (de cantidades conservadas). Así, porque su noción de causalidad solo puede ser eficiente (directa o por conexión), la “causalidad” negativa puede ser distinguida de ella y, por lo tanto, permitir la intuición de la diferencia.

Esto amerita una revisión más profunda del carácter universal de la teoría contrafáctica de Dowe.