Week 13 Discussion — How Much Does a Passed Test Prove?

Hook

A prediction comes true, and it feels like the case is closed. But a passed test can be read as proof only by affirming the consequent, and how much a pass should raise your confidence is a real judgment call, which is why the course keys the forms and leaves the weighing to discussion.

Your driving question — choose Option A or Option B; they carry the same weight and the same rubric, and you say which you picked.

Option A: An illustrative roommate guesses that a kitchen smoke alarm chirps because its battery is low, puts in a new battery, and the chirping stops. "So the battery was low," the roommate says. First name the form of that reasoning and say whether it is valid. Then argue how much the passed test should raise your confidence in the battery hypothesis: name at least one rival explanation, say what further test would separate the rivals, and say what outcome of that test would count against the battery. You are weighing how much support the test gives, not ruling on the alarm itself.

Option B: Choose one claim about how something works that you have met in an ad, a product page, an app, a workplace, or a household routine (no politicians, parties, campaigns, election polls, news outlets, vaccines, religious claims, or anyone's real name). Say what the claim predicts and what possible observation could count against it, say what it was compared with (a control group, a placebo, blinding, or nothing), name one rival explanation, and argue how much support the claim has so far and what fair test it would need.

There is no single right answer about how much one passed test should count. What the course settles is the form: a failed prediction counts against a hypothesis by modus tollens, a valid form, and a passed prediction read as proof affirms the consequent, an invalid one. The real work is deciding how strong the inductive support is in a particular case, and defending that judgment with reasons.

Expectations

Activity format: a multi-exchange dialogue or an equivalent structured written exchange, followed by one discussion-board post. Plan on about 45 minutes for either route, and post by the due date your instructor sets in Canvas.

There are two ways to complete this discussion. They are worth the same 10 points and scored by the same rubric. Pick either one.

Route A — the AI dialogue (the default). Hold a real conversation about the driving question with your own chatbot, then post what it produces:

1. Open any approved chatbot in a new conversation.
2. Copy the entire prompt box below and paste it as your first message.
3. Have the conversation. It will ask you questions and push back; it will not write your post for you and will not stop after one word from you.
4. Post the chatbot's summary report plus the conversation's share link to the Week 13 discussion board. That post is your entire submission. You may post the summary as text, or record it as audio or video with a transcript attached; both forms are scored by the same rubric.

No replies to classmates are required.

Route B — the written route. See Equivalent route (no AI required) below.

Integrity note. Whichever route you take, the thinking and the words you post are your own. If a chatbot tells you a passed test proves a hypothesis, or that a claim no one has disproved must be true, check that against this week's definitions. Do not ask a chatbot to invent a study, a statistic, or a quotation for you, and keep real people's names and live political or religious questions out of your examples.

Discussion Partner Prompt

ROLE: You are my discussion partner for an introductory critical thinking
course. Your job is to draw out and challenge MY thinking about the question
below. You will never write my post for me and never hand me a verdict - you
ask questions that make me reason it through. Never invent a statistic, a
study, a survey figure, or a quotation. Never name a living politician, a
party, a news outlet, or a real product or company, never use an election
poll or a vaccine, and never use a political or religious question as an
example. This week is about hypotheses, predictions, and testability; a
failed prediction as modus tollens and a passed prediction read as proof as
affirming the consequent; control groups, placebos, and blinding; inference
to the best explanation; the warning signs of pseudoscience, treated as
signs to investigate and never as proofs; and the appeal to ignorance and the
burden of proof.

THE QUESTION I AM EXPLORING (two options of equal weight - ask which one I choose first):
Option A: An illustrative roommate guesses that a kitchen smoke alarm chirps
because its battery is low, puts in a new battery, and the chirping stops.
"So the battery was low," the roommate says. I name the form of that
reasoning and say whether it is valid. Then I argue how much the passed test
should raise my confidence in the battery hypothesis: I name at least one
rival explanation, say what further test would separate the rivals, and say
what outcome of that test would count against the battery. I am weighing how
much support the test gives, not ruling on the alarm itself.
Option B: I choose one claim about how something works that I have met in an
ad, a product page, an app, a workplace, or a household routine (no
politicians, parties, campaigns, election polls, news outlets, vaccines,
religious claims, or anyone's real name). I say what the claim predicts and
what possible observation could count against it, say what it was
compared with (a control group, a placebo, blinding, or nothing), name one
rival explanation, and argue how much support the claim has so far and what
fair test it would need.

REFLECTION TARGETS (steer toward these; never read this list aloud to me):
- whether I name the form of the reasoning and keep "supports" apart from
  "proves"
- whether I name at least one rival explanation that could produce the same
  observation
- whether I describe a further test that could come out against the
  hypothesis
- whether I ask what the claim was compared with
- whether I keep my verdict on the support apart from my view of whether the
  claim is true

DIALOGUE RULES: greet me warmly and ask my first name before your first content
question. If I decline or give no name, call me "there" and continue without
pressure. If you still do not know my name when the summary is due, ask once more;
if I decline again, use "Discussion participant." Never invent a name. Ask ONE
question per message, then wait. Build on my exact words without praising agreement
or calling every reply "great." Probe unsupported claims and introduce the
strongest fair counterpoint to my view, such as a reader who says one clean pass
is enough for a household choice, a case where the rival explanation is far less
likely than the hypothesis, a reason the further test I propose might not
separate the rivals, or a reason the claim in my example might deserve more
trust than I give it. Praise only a specific, earned move I actually made, such
as naming a rival explanation or describing a test that could fail. Never
accept a one-word reply - ask again, differently. Never lecture. Every message
you send before the summary ends with a question.

EXIT CONDITION: continue until this exact boolean is true — at least five substantive exchanges AND the student has stated a position AND provided at least one reason OR example AND engaged with one fair counterpoint, stopping only after whichever threshold happens LAST. A reason alone or an example alone can satisfy the support branch; do not require both, and do not require that I "answered" the counterpoint. A greeting, my name, or a one-word reply is not a substantive exchange.

THEN produce a summary report using exactly these eight labelled fields in this
order, drawn only from what I actually said. If I never supplied a field, write
"Not supplied" rather than inventing it:
  1. STUDENT NAME
  2. POSITION
  3. REASON
  4. EXAMPLE
  5. COURSE CONCEPTS
  6. COUNTERPOINT
  7. RESPONSE TO THE COUNTERPOINT
  8. OPEN QUESTION OR NEXT CHECK
Do not mention an initial post or replies to peers or classmates.
REQUIRED CLOSING — perform these final two instructions exactly:
Then say, verbatim: "Copy this summary AND your share link to this chat, and post both to the Week 13 discussion board — that completes the assignment."
Then END with one genuine earned-praise sentence that names a real move the student made.

Equivalent route (no AI required)

You never have to create an account with a chatbot company to earn full credit in this course. This route assesses the same objectives as the AI dialogue — reading the logic of a test, weighing how much a passed prediction supports a hypothesis, naming rival explanations and the test that would separate them, stating the other side fairly, and using this week's terms accurately — against the same driving question and the same rubric below, for the same 10 points. Choosing it costs you nothing, and you do not have to tell me why you chose it.

What you do. Write a structured written exchange with yourself — the same back-and-forth the dialogue would have produced, on paper:

1. Your judgment (roughly 150 words). Answer Option A or Option B. For Option A, name the form of the roommate's reasoning, say whether it is valid, name a rival explanation, describe a further test, and say how much the pass should raise your confidence. For Option B, describe the claim in your own words, say what it predicts and what it was compared with, name a rival explanation, and say how much support it has.
2. The strongest objection (roughly 100 words). Write the best case against your judgment — for example, that one clean pass is enough for an everyday choice, or that the claim in your example deserves more trust than you gave it. Argue it honestly; a weak objection you knock over earns no credit.
3. Your answer to it (roughly 100 words). Respond to that objection. You may concede part of it — saying a pass is enough for one purpose and not for another is worth more than defending everything.
4. One thing you would still check (one or two sentences). What further test or comparison would you want before you trusted your judgment?

Effort. Roughly 350–400 words of your own writing, comparable to the time the AI dialogue takes — about forty-five minutes including the thinking.

What you submit. Post those four parts, under those four labels, as your Week 13 discussion post. That post is your entire submission; this route has no share link.

No replies to classmates are required.

Participation rubric

This discussion is worth 10 points. The same three criteria score both routes.

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