On what grounds might we doubt a claim?

What this prompt is really asking

Each of the twelve TOK concepts gives you a different way into a prompt. These are the ones that do the most work here.

• Certainty

  Status of Knowledge · primary lens

  The prompt asks what legitimately opens a claim back up, which is a question about how doubt is closed off in the first place.

  The degree to which doubt about a claim has been closed off. Certainty is a state of the knower, not of the claim, which is why a claim can be true without anyone being certain of it and why confidence and reliability can come apart badly.

• Justification

  Grounds of Knowledge

  Doubt is usually directed at the inference rather than the evidence, so the grounds for doubt track the standards of justification in use.

  The reasoning that connects evidence to a conclusion. Two knowers can hold the same evidence and be justified in different beliefs if their inferential standards differ. Justification is what separates knowing something from happening to be right about it.

Where the knowledge framework bites

Reached through this prompt’s concepts, in the framework’s canonical order.

Scope

Certainty: The certainty available in a field is a feature of the field, not a measure of its rigour. Mathematics can offer proof because of what it is about; the human sciences cannot, and reading that as a deficiency mistakes scope for weakness.

Justification: The strength of justification a field demands is calibrated to what it is for. A discipline whose errors are expensive sets a higher bar than one where a provisional answer is useful, so justification standards are partly a statement about a field's purpose.

Methods and tools

Certainty: Methods do not only produce results, they produce a warranted level of confidence in them. Confidence intervals, error bars, source triangulation and the standards of proof are all machinery for saying how certain a knower is entitled to be.

Justification: A discipline's methods encode its standard of justification: peer review, replication, source criticism and proof are all answers to the question of when an inference has earned its conclusion. Comparing those standards across areas of knowledge is more revealing than asking which is strictest.