Week 4 Flashcards
(49 cards)
What problem arises when trying to quantify confirmation?
It is unclear how many instances are needed to confidently believe a general statement.
What is falsification, according to Karl Popper?
The idea that science should focus on refuting theories rather than confirming them.
Why is a single observation sometimes enough to confirm a general statement?
When there is strong expected uniformity, as in native speakers’ grammatical judgments.
What is the standard view of science regarding theory testing?
Scientists start with objective observations, test theories against them, and aim for consensus by steadily approaching the best theory.
What is confirmation in scientific methodology?
Confirmation occurs when observations support a theory.
What is disconfirmation in scientific methodology?
Disconfirmation happens when observations undermine a theory.
What is an instance in the context of confirmation?
An instance is a specific case that supports a general statement (e.g., “Hamlet is good” supports “All plays of Shakespeare are good”).
Why is a single observation sometimes enough to confirm a general statement?
When there is strong expected uniformity, as in native speakers’ grammatical judgments.
Why is a single observation often insufficient for confirmation?
In cases with low expected uniformity, such as artistic styles, many diverse observations are needed.
What are the four factors that influence how much evidence is needed for confirmation?
- Expected uniformity
- Scope of the general statement
- Representativeness of instances
- Prior probability of the statement
How does expected uniformity affect confirmation?
More uniform phenomena (e.g., grammatical rules) require fewer observations to confirm a general statement.
How does the scope of a general statement affect confirmation?
The broader the claim, the more evidence is needed to confirm it.
Why is representativeness of instances important in confirmation?
Observations must be diverse enough to reflect the full subject of study.
How does prior probability influence confirmation?
Statements that seem unlikely require stronger evidence to be confirmed.
What is an example of a general statement that is easy to confirm?
“The Bell-Beaker culture didn’t have metal artificial hips” – since it’s already highly probable.
What is an example of a general statement that requires more evidence?
“The Bell-Beaker culture was entirely pacifist” – since it’s highly improbable based on known history.
What is theory-ladenness in the context of confirmation?
Theory-ladenness means that when evaluating how much observations support a theory, we rely on prior theoretical convictions rather than making purely neutral observations.
How does prior knowledge influence our expectations of uniformity in observations?
Our expectations about uniformity depend on our prior knowledge; for example, we expect more uniformity in grammatical judgments than in color choices because language learning enforces consistency, whereas painting allows more variation.
Why do we need prior theoretical knowledge to determine the representativeness of evidence?
Because to assess representativeness, we need to understand what kinds of variations are typical in a given domain, such as historical changes in Picasso’s paintings or regional differences in grammar.
How does theory-ladenness complicate the standard view of science?
The standard view suggests theories are tested against observations, but in reality, testing always relies on pre-existing theoretical assumptions, making the relationship between observation and theory more complex.
What is the naive inductive approach to scientific reasoning?
It assumes that if we observe many instances of A having property B without counterexamples, we can conclude that all As have property B.
How does real scientific reasoning differ from naive induction?
Real science includes assumptions about uniformity, representativeness, and prior plausibility, making the reasoning process more complex and theory-dependent.
What challenge arises from the theory-ladenness of observation?
It raises the question of where our initial theories come from and whether they were simply invented, potentially undermining the reliability of science.
Why might scientists disagree even when presented with the same evidence?
Because different scientists may have different theoretical commitments, affecting their judgment of a theory’s plausibility and the representativeness of evidence.