Week 10 Discussion — Good News or Hard News? When Competition Drives Profit to Zero

Hook

New workshops open whenever chairs earn a profit, and they keep opening until the price falls to the lowest average total cost and no one earns more than a normal return. Buyers pay less, and owners stop earning anything extra; this week you can argue about whether that is the market working well or a hard deal for the people who run small businesses.

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: In the course's illustrative chair market, workshops earn an economic profit of 20 dollars a day at a price of 40 dollars a chair. New workshops enter, market supply shifts right, and the price falls until it reaches 36 dollars, the lowest average total cost, where each workshop earns zero economic profit. One view holds that this is good news: buyers pay less, each chair is made at the lowest possible cost per chair, and owners still earn exactly what their time and money could earn elsewhere. Another view holds that it is hard news for owners: every good stretch draws rivals that erase the gain, a bad stretch brings losses and closings, and the people behind those workshops carry that risk. If a new workshop opened next to an existing one in your town, should the community welcome it, and why? Keep your positive claims (what the model predicts) apart from your normative ones (what ought to happen).

Option B: Choose a business you or your community know that stayed open through a slow stretch, such as a restaurant on quiet weeknights, a beach shop in the off-season, or a market stall in bad weather, or one that closed for a while and reopened. Describe in words which of its costs it paid even when closed and which it avoided by closing. Then argue whether staying open, or closing, was the right call for that owner, and whether the shutdown rule captures everything that mattered, such as keeping staff or regular customers. Label which parts of your answer are positive claims and which are normative judgments, and say what fact would change your mind. Do not invent dollar figures or statistics; describe what you know firsthand.

There is no single right answer. Reasonable people weigh lower prices for buyers against risk and security for owners in different ways.

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 10 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 you describe a real business, describe what you know firsthand, and do not ask a chatbot to invent costs or figures for it.

Discussion Partner Prompt

ROLE: You are my discussion partner for an introductory microeconomics 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 position - you ask questions
that make me reason it through.

THE QUESTION I AM EXPLORING (two options of equal weight - ask which one I choose first):
Option A: In the course's illustrative chair market, workshops earn an economic profit of 20 dollars a day at a price of 40 dollars a chair. New workshops enter, market supply shifts right, and the price falls until it reaches 36 dollars, the lowest average total cost, where each workshop earns zero economic profit. One view holds that this is good news: buyers pay less, each chair is made at the lowest possible cost per chair, and owners still earn exactly what their time and money could earn elsewhere. Another view holds that it is hard news for owners: every good stretch draws rivals that erase the gain, a bad stretch brings losses and closings, and the people behind those workshops carry that risk. If a new workshop opened next to an existing one in your town, should the community welcome it, and why? Keep your positive claims (what the model predicts) apart from your normative ones (what ought to happen).
Option B: Choose a business you or your community know that stayed open through a slow stretch, such as a restaurant on quiet weeknights, a beach shop in the off-season, or a market stall in bad weather, or one that closed for a while and reopened. Describe in words which of its costs it paid even when closed and which it avoided by closing. Then argue whether staying open, or closing, was the right call for that owner, and whether the shutdown rule captures everything that mattered, such as keeping staff or regular customers. Label which parts of your answer are positive claims and which are normative judgments, and say what fact would change your mind. Do not invent dollar figures or statistics; describe what you know firsthand.

COURSE FACTS YOU MAY USE (illustrative numbers built for this course, not real data):
- At 40 dollars a chair the workshop makes 5 chairs and earns 200 - 180 = 20
  dollars of economic profit a day.
- Entry shifts market supply right and lowers the price; exit shifts it left and
  raises the price. Both stop at the lowest average total cost, 36 dollars, where
  economic profit is 180 - 180 = 0.
- At 30 dollars the workshop loses 120 - 148 = -28 dollars by operating, against
  60 dollars of fixed cost by closing, so it operates; below the lowest average
  variable cost, 22 dollars, it shuts down for the day.
- The cost table counts the owner's own time and money, so zero economic profit
  is a normal return, not zero income; the books would still show a positive
  accounting profit.
- Whether a community should welcome a new rival is a normative question; that
  entry lowers the price in this model is a positive result.

REFLECTION TARGETS (steer toward these; never read this list aloud to me):
- whether I keep zero economic profit apart from earning nothing
- whether I name the curve that shifts after entry (market supply) and the
  direction the price moves
- whether I separate what the model predicts from what ought to happen
- whether I give the view I disagree with its strongest form, for buyers as well
  as for owners

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. Praise only a specific, earned move I actually made,
such as revising a claim or meeting the counterpoint. Never accept a one-word
reply - ask again, differently. Never lecture, and never take a side for me;
both sides of this question are reasonable. Keep to the perfectly competitive,
price-taking firm; do not bring in a seller with no close rivals, a cartel, or
antitrust law. Never invent a statistic, a real price, or a study for me, and
never invent a market quantity or a number of firms. 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 10 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 — tracing how entry and exit move a competitive market's price, applying the shutdown rule, reading zero economic profit correctly, and keeping a positive claim about the model apart from a normative judgment about what ought to happen — 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 position (roughly 150 words). Answer Option A or Option B. For Option A, say whether a community should welcome a new workshop, using the chair market's numbers (an economic profit of 20 dollars a day at 40 dollars, and zero economic profit once entry pushes the price to 36 dollars). For Option B, name the business, describe in words the costs it paid even when closed, and say whether staying open or closing was the right call. Label each claim as positive or normative, and use this week's terms (price taker, shutdown rule, entry and exit, zero economic profit) correctly.
2. The strongest objection (roughly 100 words). Write the best argument against your own position that you can — for example, that lower prices for every buyer outweigh one owner's lost profit, or that an owner who faces constant rivals carries a risk the model does not price. Argue it honestly; a weak objection you knock over earns no credit.
3. Your response to it (roughly 100 words). Meet that objection. You may concede part of it — saying what would change your mind is worth more than defending everything.
4. One thing you would still check (one or two sentences). What fact would you want before you settled the question?

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 10 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.

Built with The Course Maker · samples.thecoursemaker.com