Design arguments Flashcards
What are design arguments
- Inductive (the existence of God is likely, based on the premises)
- A posteriori (based on experience of the universe)
- Teleologicial Arguments attempting to identify various empirical features of the world
- That constitute evidence of intelligent design
- Which infers God’s existence as the best explanation for these features
What is Aquinas’ argument from analogy
- Compares the natural world which appears to have a purpose and goal
- With human activity which does have a purpose and a goal
- He uses the analogy of an archer speeding to its target
- The arrow is an inanimate object which lacks intelligence and purpose to move itself
- Therefore the nature of it’s flight indicates the action of an intelligent archer
- A flower has a purpose to reproduce
- The flower cannot themselves move towards that goal
- Therefore there must be an intelligent designer that moves the flower towards is goal
Outline Aquinas’ argument from analogy
- Things that lack intelligence such as simple organisms have an end goal
- Things that lack intelligence cannot move towards their end goal unless they are directed by someone with knowledge and intelligence
- For example, an arrow cannot direct itself towards its target
- The arrow needs an archer to provide direction
- Therefore by analogy, there must be some intelligent being which directs all unintelligent natural things towards their end goal
- This being is God
Paley’s watch analogy
- Paley imagines himself walking across a heath and coming across a stone and a watch
- He then questions how both the objects came to be here
- For the stone, he thinks that it may have been there forever
- However in the case of the watch, that answer is unsatisfactory and needs further explanation
- A watch has several parts
- The parts are framed and work together for a purpose
- The parts have been made with specific material for their action
- The parts produce regulated motion when functioning together
- If the parts were different in any other way the motion would not be produced
- Therefore the watch has evidence of contrivance (Design)
- Therefore there must be a designer of the watch
Paley’s nature/eye analogy
- Similarly we can observe the criteria of design in nature
- We can also see that design in nature surpasses human design
- For example the human eye contains intricacy, complexity and a specific purpose (to see)
- If the eye was designed any other way, the purpose of sight would not be produced
Paley’s universe analogy
- The various components of the universe are suited to fuilfil and show incredible degrees of complexity
- Therefore the complexity and purpose of the natural world and universe suggests existence of a designer
- However the complexity of the universe is on a more ‘wondrous scale’
- In other words the complexity of the universe is much vaster compared to a watch
- This would exceed the possibility that the universe is a product of human design
- Therefore it must be the work of a supremely powerful and intelligent designer
- This designer is God
Paley’s design argument
1.A watch has certain complex features
•E.g it consists of parts which each have a function and work together for a purpose
2.Anything which exhibits these features must have been designed
3.From 1 and 2 we can infer that the watch has been designed by a designer
4.The universe is like the watch:
•It possesses the same features on a far more wondrous scale
5.From 4 and 2: we can infer that the universe, like the watch, has been designed by a wondrous universe maker
6.This universe maker is God
Paley’s anticipated criticism and response
1.No knowledge of watchmaking
- We may have never seen a watchmaker at work or a the design process of a watch
- Therefore we cannot conclude how the watch came to be
- Similarly, we do not have knowledge of how the world was created
- Therefore we cannot know how the world was made
- Paley argues that we do not need experience of the design process to infer a designer exists
- When we look at ancient crafts we can conclude that someone existed with skills to create these crafts
- Therefore we can conclude that there has been design without experience of the process
Paley’s anticipated criticism and response
2.Faults in the watch
- It is possible to observe problems in the functioning of the watch
- For example irregularity or the watch telling the incorrect time
- Similarly evil exists in the world
- This suggests a flaw in the design of the world
- However it is still possible to observe details of design in the watch while flaws exist
- The faults of the world (evil) does not mean the design does not exist
Paley’s anticipated criticism and response
3.Some parts of the watch lack purpose
- Some parts of the watch may have no apparent purpose
- Purpose is an essential part of design
- If parts lack purpose this invalidates the idea of design
- This is because it is nonsensical that a designer would include parts with no purpose
- Paley responds that all parts have a purpose
- However we do not always know the purpose of some parts
- For example there may be a part of the watch that seems pointless
- However when the part is removed the mechanism fails to work
Paley’s anticipated criticism
4.Features of design can be explained by random processes
- There are features of design that can be explained without a designer
- For example the watch may have arised merely out of a possible combination of material forms
- Therefore the structure of the watch may have come together purely from random processes
- For example the watch may have come together from natural processes such as from the ‘law of metallic nature’
- This suggests that the watch could be explained without reference to a designer
Paley’s formulation and response to the 4th anticipated criticism
1.Paley supposes that the watch is some type of watchmaking machine
2.This means the watch is capable of making other watches with all the same features that it has
3.This means that the watch-machine itself was previously made by a watch-machine and so on
4.The watch-making machine still has the same features of contrivance each time
•For example ordered and regulated parts with a purpose
5.However there is still evidence of design no matter how far back we go
6.Therefore there is still evidence of design
7.Therefore there is still a designer
Hume’s criticisms of the design argument
1.We have no experience of world-making
- To know what has brought something about, we need experience of its being brought about
- Physical objects can be compared to other physical objects
- For example we can infer design from ancient crafts by comparing it to objects from today
- This is because we can have knowledge of how these crafts were brought about
- However we cannot compare the experience of our universe to another universe that has been designed
- This is because we lack experience of how the universe was brought about
- Therefore we have no grounds to conclude that there is a being that designed our universe
Hume’s criticisms of the design argument
2.Arguments from analogy are weak
- Arguments from analogy can only be reliable when both things have relevant similarities
- For example it takes many years of trial and error to produce a final product in the case of complex machines
- If we use this analogy to compare our world:
- Then our world would be a product of a long line of ‘draft’ universes
- Therefore it would be possible that our current universe can be replaced by a better one in the future
- This analogy shows that the designer would be imperfect as many preliminary universes would be needed for a perfect one to be in place
- Hume argues that the universe is more organic than it is mechanical
- Therefore it is more probable to say that the universe grew rather than made
- We could say that the universe is more like a giant vegetable than a watch
- It may appear absurd to compare the universe to a giant vegetable
- However the same can be said about the machine analogy
- Therefore both analogies are flawed
- Therefore arguments from analogy are weak
Hume’s criticisms of the design argument
3.The Epicurean hypothesis
- We can use the idea of the Epicurean hypothesis
- This hypothesis states that given eternity, a finite number of particles be ordered at some point
- When these particles are ordered, a type of equilibrium will form
- This shows that design can occur through random processes