Week 9 Philosophy Workshop: The Machine on the Beach

Part 1 — The Big Picture

This week you learned the classic arguments about God: the ontological argument, the cosmological argument of Aquinas's first three ways, the design argument with Paley's watch on the heath, Hume's objections, and the problem of evil. In this workshop you take one illustrative packet from a coastal science center whose volunteers are arguing about a brass device found on the beach. You reconstruct four short arguments, judge the three deductive ones for validity and the one argument from analogy for strength. Then you test a variation of Paley's watch, the beach machine, and ask what its order shows and what it does not. You write a short dialogue between a defender of the design argument and a critic who presses Hume's objections, each in their strongest form. Last, you check a chatbot's version of the same work and correct its slips by hand, starting with who described the watch on the heath. You never have to say what you personally believe about God.

Time budget: Plan for about 90 minutes.

Part 2 — The Task

Guiding question: Which of the shoreline packet's three deductive arguments are valid, how strong is its argument from analogy, and what does the beach machine's order show about a maker?

Workshop data: Shoreline packet: four illustrative arguments and the beach machine, a variation of Paley's watch on the heath

Source: An illustrative packet of four short arguments and one thought-experiment variation written for this course's workshop; it describes no real science center or person, and its premises are written for teaching, not claims the course endorses.

• Rows: 4 arguments (B1 to B4) and 1 thought-experiment variation; the reconstruction table has 4 rows and the beach-machine table has 4
• Arguments: B1 the gears and the watch; B2 parts that fit a purpose; B3 no maker, no fit; B4 wear from human hands
• Thought-experiment variation: a brass tide-tracking device found on a beach by a walker who has never seen one, labelled as a variation of Paley's watch on the heath

Part 3 — Materials & Procedure

Tools and materials

• A free word processor or note-taking app for arguments in standard form and short dialogues, with the pinned public-domain texts on Project Gutenberg and the Internet Classics Archive open beside it; and one approved chatbot used as a sparring partner whose reconstructions, quotations, and attributions the student checks word for word against the pinned text and record before trusting them
• A free word processor or note-taking app
• One approved chatbot

Ways of working

• reconstruct-the-argument
• test-the-thought-experiment
• write-the-dialogue

Procedure

1. Read the shoreline packet in Part 2 twice. In your notes, copy each of B1 to B4 into standard form: number the premises P1 and P2, and write the conclusion last as C, introduced by So. Tool: A free word processor or note-taking app. Check: Four reconstructions, each with numbered premises and one conclusion line that begins with So.
2. In the first table, mark B1 as deductive or inductive and judge it for strength. For B2 to B4, name each form and write valid or invalid with a one-sentence reason that uses the definition of validity. For any invalid argument, write a same-shape argument on a new topic whose premises are true and whose conclusion is false. Tool: A free word processor or note-taking app. Check: Every row of the first table has a kind, a form or a strength judgment, and a reason; each invalid row has a working counterexample; no row says sound or unsound.
3. Count the arguments in the second table: how many are deductive, how many of those are valid, and how many are invalid. Show the subtractions from the 4 arguments in the packet. Check: A count of deductive, valid, and invalid arguments, with each subtraction shown.
4. Work the beach machine in the third table: say what the device's order shows about its maker, what Hume's two objections would say if the same reasoning were stretched to the whole world, one change to the case that pulls your intuition the other way (label it as your own variation), and what the beach machine changes compared with Paley's original case. Check: Each row is filled in, your own change is labelled as a variation, and the original case is credited to Paley (1802).
5. Write a short dialogue of four to six lines between a defender of the design argument and a critic who presses Hume's objections. Give each speaker their strongest point, have each answer the other, and end with one plain sentence naming where they disagree. Tool: A free word processor or note-taking app. Check: Each speaker answers the other, neither is a weakened version, and a closing sentence names the disagreement.
6. Paste the prompt from Part 6 into one approved chatbot after your completed work, read its reply, and write the critique report. Or, on the equivalent route, mark up the printed flawed analysis instead. Tool: One approved chatbot. Check: A report that quotes at least two slips and corrects each by hand against the packet and Chapter 9.

Fallback route

When to use it: Use this route if you cannot open a word processor or a note-taking app.

Copy the three tables by hand onto paper or into any text file, read the packet from this page, write the four reconstructions, the count, the beach-machine table, and the dialogue by hand, and complete every analysis question and the critique step in the same order. Submit a photo or scan of the paper, or the text file, for equal credit.

This route earns the same credit as the primary route.

Part 4 — The Scaffold

Sort each argument by kind before you judge it, so a deductive one is keyed by its form and the analogy is judged by its strength.

Student scaffold table 1

Argument	Deductive or inductive	Form or strength	Reason	Counterexample if invalid
B1 (the gears and the watch)
B2 (parts that fit a purpose)
B3 (no maker, no fit)
B4 (wear from human hands)

Count the kinds and keys so every number you report traces back to the table above.

Student scaffold table 2

Count	Number	How you got it
Arguments in the packet	4	Given in the packet
Deductive arguments
Valid deductive arguments
Invalid deductive arguments

Run the variation one step at a time, so your verdict about the maker is argued rather than asserted.

Student scaffold table 3

Step	What you find
What the device's order shows about its maker, and why
What Hume's two objections would say if the reasoning were stretched to the whole world
Your own change to the case that pulls the other way (a labelled variation)
What the beach machine changes from Paley's case

Part 5 — Analysis Questions

1. How many of the packet's 4 arguments are deductive, and of those, how many are valid and how many invalid? Show the subtractions, and name the form of each deductive argument.
2. Why is B2 invalid even if both of its premises are true? Explain with your same-shape counterexample and one plain sentence about the device on the beach.
3. Using your beach-machine table, explain what the device's order shows about its maker, what Hume's objections say when the reasoning is stretched to the whole world, and which way your own variation pulls. Keep the original case credited to Paley (1802).
4. In your dialogue, what is the strongest point each speaker makes, and where exactly do they disagree? Connect the design side to B1 and the idea of an argument from analogy. End with one plain sentence.
5. What can a validity check not tell you about B3, and what can the beach machine not show about whether the world as a whole has a designer?
6. Choose one reflection: (a) which argument in the packet did you first judge the wrong way, and what in this week's definitions changed your mind? or (b) which speaker in your dialogue did you start out agreeing with, and did your view survive writing the other side at its strongest?

Part 6 — AI-Critique Moment

Choose one equal-credit critique route. Route A: ask an approved AI tool to critique your completed work, then check its response against your own evidence. Route B is the no-AI equivalent printed below.

Approved tools: Claude, Gemini, ChatGPT, Grok, Microsoft Copilot.

Prompt to paste:

I've completed my reconstruction table, my count, my beach-machine table, and my short dialogue above. Here is an illustrative workshop packet from my philosophy course. Shoreline packet (illustrative): volunteers at a coastal science center debate a brass device found half buried on the beach, with gears that turn and a dial that tracks the tides. B1: The device's gears fit together to track the tides, as a watch's gears fit together to mark the hours. A watch has a maker. So the device probably has a maker. B2: If the device was made by a person, its parts fit a purpose. Its parts fit a purpose. So it was made by a person. B3: If no one made the device, its parts would not fit a purpose. Its parts fit a purpose. So someone made the device. B4: If the device was made by a person, it shows wear from human hands. It was not made by a person. So it shows no wear from human hands. The beach machine (a variation of William Paley's watch on the heath, written for this workshop): the same device, found by a walker who has never seen a tide clock. Please do six things. First, put each of B1 to B4 in standard form, and say whether each is valid and whether it is sound. Second, tell me who first described the watch on the heath, with the work and year, and where David Hume objected to the design argument, with the year. Third, give me Paley's exact words about the watch, and give me Aquinas's exact words about the five ways and say whose words they are. Fourth, tell me which book 'I think, therefore I am' comes from. Fifth, summarize the design argument and Hume's objections, and say whether anyone outside Europe ever asked about the order of the world. Sixth, tell me whether the beach machine shows that the world has a designer, and end with a balanced summary.

Test the response for these likely failures:

• Chatbots often call B2 valid, reading 'its parts fit a purpose, so a person made it' as if it were modus ponens, and they often call B4 valid too.
• Chatbots often say B3 is sound, or that it proves the device was made, without asking whether its first premise is true.
• Chatbots sometimes credit the watch on the heath to Hume, or to Aquinas's fifth way.
• Chatbots sometimes say Hume's Dialogues answered Paley's book, or date the Dialogues after 1802.
• Asked for Paley's exact words about the watch, chatbots usually supply a polished sentence in quotation marks as if it were his line.
• Asked for Aquinas's exact words, chatbots give the English line and present it as words Aquinas himself wrote.
• Chatbots usually place 'I think, therefore I am' in the Meditations of 1641.
• Chatbots often reduce the design argument to 'anything complicated must have been made by God', or reduce Hume's objection to 'the world is just random'.
• Chatbots sometimes say that asking about the source of the world's order was only a European project.
• Asked whether the beach machine shows that the world has a designer, chatbots often announce that Hume refuted the design argument, or that the order of nature proves a designer.
• Chatbots often end a 'balanced' summary by calling the design argument outdated, or by saying that the eye's design speaks for itself.

Write 3-5 sentences naming what the chatbot got right and at least two places where it slipped into one of the failures above, quoting its words and correcting each by hand against the packet and Chapter 9.

Equivalent route (no AI required)

No AI account is required for this workshop. This route assesses the same objectives, Objective 5 (evaluate the classic arguments for and against the existence of God and the relationship between faith and reason) and Objective 2 (identify arguments, put them in standard form, judge whether they are valid, sound, or inductively strong, and test claims with counterexamples and thought experiments), takes comparable effort of about the same 90 minutes, uses the same rubric, and earns the same credit. Instead of the chatbot, critique this flawed analysis of the shoreline packet, printed here in full: "B1, B2, B3, and B4 are all valid, and B2 is modus ponens, so a person made the device. B3 is sound, which proves the device was made. David Hume invented the watch on the heath in 1802, and his Dialogues were a reply to Paley. Paley summed it up in his own exact words, quoted here in full. Aquinas wrote in English that the existence of God can be proved in five ways. Descartes wrote 'I think, therefore I am' in the Meditations. The design argument says anything complicated must have been made by God, and Hume said the world is just random. Asking where the world's order comes from was a European invention. The beach machine plainly shows that the world has a designer. To sum up fairly, the design argument is outdated, and Hume refuted it." Mark every error you find, name the failure it shows, and correct it by hand against the packet and Chapter 9; find at least two. Submit the marked-up analysis with your corrections in place of the chatbot report and share link. If you take the design side in your dialogue, rebuild the printed claim about Hume at its strongest as Hume's side would state it; if you take Hume's side, rebuild the printed claim about the design argument at its strongest.

Part 7 — What to Submit

• The three completed tables from Part 4, including the count with its subtractions
• The four reconstructions, the counterexamples, and the four-to-six-line dialogue
• Written answers to all six analysis questions
• The chatbot critique report with its share link, or the equivalent route's marked-up flawed analysis

Deliverable:

A short Philosophy Workshop report on one illustrative shoreline packet: three completed tables (four arguments sorted by kind, the three deductive ones keyed for validity with reasons and counterexamples for the invalid ones and the analogy judged for strength; the count of deductive, valid, and invalid arguments with its subtractions; and the beach machine worked step by step), a four-to-six-line dialogue between a defender of the design argument and a critic who presses Hume's objections ending in a plain sentence, written answers to six analysis questions, and a critique of a chatbot's version of the same work, or, on the equivalent route, a marked-up correction of the printed flawed analysis. Choose how you show it: written answers, a recorded explanation with a transcript, or labelled tables with short notes; every form is graded by the same scoring criteria. Submit in any accessible file type or as a link; a recorded response may be submitted as audio or video with a transcript, or as text.

Rubric

The rubric below shows how each submitted part is evaluated; bands are full, partial, or none.

Workshop evaluation criteria

Criterion	Full	Partial	None
Accurate reconstruction and validity judgment	All four arguments are in standard form, B1 is judged for strength as an argument from analogy, each deductive form is named and keyed valid or invalid with a reason from the definition, each invalid one has a working same-shape counterexample, and the count is worked with its subtractions.	Most arguments are reconstructed and judged with reasons, but one is misnamed or miskeyed, B1 is keyed for validity, a counterexample does not work, a reason is missing, or the count is missing or off.	The reconstructions are missing, or the keys rest on whether conclusions sound true rather than on form.
Thought-experiment test	The beach-machine table says what the device's order shows about its maker and why, applies both of Hume's objections when the reasoning is stretched to the whole world, adds one labelled variation that pulls the intuition the other way, and says what the beach machine changes from Paley's case.	The table is mostly complete, but one of Hume's objections is missing, the student's own change is not labelled as a variation, or the comparison with the original case is missing.	No beach-machine table appears, or the variation is treated as Paley's own case.
Two positions stated fairly in dialogue	The dialogue gives the design defender and the Humean critic each their strongest point, has each answer the other, links the design side to an argument from analogy, and ends in one plain sentence naming where they disagree.	Both positions appear, but one is weakened, the speakers talk past each other, or the closing sentence is missing.	No dialogue, or only one side is stated.
Caught-and-corrected AI slip, on either route	The chatbot critique report, or the equivalent route's marked-up flawed analysis, quotes at least two errors, names the failure each shows, and corrects each by hand against the packet and Chapter 9; either route earns this band equally.	One error is quoted and corrected on either route, or errors are named without a correction.	No critique on either route, or chatbot output is pasted without checking it.
Accurate sourcing and reflection	The watch is credited to Paley (1802), the objections to Hume's Dialogues (1779), any quotation of Aquinas to his translators, the beach machine is labelled as a variation, nothing is invented, and the reflection answers option (a) or (b) with a reason.	The sourcing is accurate but the reflection is thin, or the reflection is strong but one attribution goes beyond the pinned record.	An invented quotation, work, or date appears, and there is no reflection.

Quality Gate

• Every argument is in standard form, with numbered premises and a conclusion line introduced by So.
• Each deductive argument is keyed valid or invalid with a reason from the definition, the argument from analogy is judged for strength rather than validity, each invalid argument has a working same-shape counterexample, and no argument in the packet is called sound or unsound.
• The beach machine is labelled as a variation of Paley's watch on the heath, any further change is labelled as the student's own variation, the watch is credited to Paley (1802), and the objections to Hume's Dialogues (1779).
• Each position in the dialogue is stated as its strongest defenders would, and no verdict is announced on whether the world has a designer.
• No quotation, work, date, or philosopher's view is invented anywhere in the submission, and Aquinas's line, if quoted, is credited to its translators.
• The critique quotes the chatbot or the flawed analysis and corrects at least two errors by hand.