{"t0":"This is a pretend file address. No folder was created on your device.","t1":"You changed this page’s record only. It is not saved or sent anywhere.","t2":"This written example includes a pretend photo address. No request was sent.","t3":"This written example returns an error, not a photo address. The app could offer another breed or a retry.","t4":"The written answer rule can use only the notes you checked.","t5":"Your forecast selects a written next step. No model is making the choice.","t6":"Try an action to see whether it is allowed and whether any attempts remain.","t7":"Compare 4 and 5 workers. The extra helper adds coordination work without finishing a batch sooner. These are made-up units, not measured speed.","t8":"You changed what is being checked. The old pass no longer applies. Check again.","t9":"These are three connected, prewritten chapter plans. Change the secret keeper to see which chapters need another look.","t10":"The keeper is no longer Noor. Chapters 1 and 3 use the keeper’s name. Chapter 2 relies on chapter 1. Review the story connections as well as the changed names.","t11":"The loop stops at your chosen count; no audio plays.","t12":"Your chosen count stops the repeats. No music plays.","t13":"Closest under this map’s rules:","t14":"Equal distances keep the original note order.","t15":"Ties keep the starting order; nearby does not mean true.","t16":"A virtual path, not a folder created on your device.","t17":"Enter a whole-number age from 17 to 21.","t18":"The record has not been updated.","t19":"The record changes here only. Nothing is uploaded or saved.","t20":"Written success example. The response includes an illustrative photo address.","t21":"Written error example. No photo address was returned. Offer another breed or a retry.","t22":"Question: How old is Mira?\nSelection changed. Ask again to use these notes.","t23":"A previous answer does not apply to a changed selection.","t24":"Noor keeps the lighthouse secret.","t25":"Noor, according to the included secret note.","t26":"Not enough information in this context.","t27":"Only the selected notes are available to this fixed answering rule.","t28":"A written branching rule, not model planning.","t29":"Try one action to check both permission and remaining budget.","t30":"Compare 4 and 5 workers: a worker can add overhead without removing a batch. This is not a benchmark.","t31":"Inputs changed. Run the check again; any earlier pass is now stale.","t32":"Review needed: this chapter directly uses the keeper identity.","t33":"Review needed: this chapter depends on chapter 1, where the keeper changed.","t34":"Keeper changed from Noor. Chapters 1 and 3 use that fact directly; chapter 2 depends on chapter 1. Review the story, not just the substituted names.","t35":"Three connected, fixed outlines. Change the keeper to reveal the review dependencies.","t36":"Download requested: workshop-story.txt. Your browser controls where it is saved.","t37":"Download unavailable in this browser. You can copy your text instead.","t38":"The explicit correction supersedes the old age note.","t39":"Missing support remains unknown.","t40":"The answer uses the selected age note.","t41":"Counter reset to zero. Permission and budget settings are unchanged.","t42":"Download requested: story-blueprint.json. It contains your current names and three fixed outlines.","t43":"Download unavailable in this browser. Your outline remains visible on this page.","t44":"Experiment reset to its starting inputs. Your course check-ins are unchanged."}

The question to explore

Build Mira’s character card

How can a program keep facts separate?

About 8 minutes / Suggested pace / No account needed

Record
JSON
State

Try the experiment

What this activity helps you do

Change Mira’s age and watch one JSON value change. Separate named fields let a program find her age directly. Having a field for a fact does not make the fact correct.

Local teaching illustration / No AI model call

Find the name and age fields in the JSON record.
Edit Character name or choose a whole-number Age from 17 to 21. The JSON updates as you edit.
Restore her age to 17. Explain the difference between a field name and its value.

{ "name": "Mira", "age": 17 }

Change a control to explore the example when JavaScript is enabled.

The idea

A record gives each piece of information a name, such as name or age. JSON writes that record as text. Text values use quotes; numbers do not need them.

State means the values the program holds right now. Editing this record changes this activity, not the agreed facts in other lessons. Mira starts at 17. A readable record can still contain the wrong age.

Take this with you

What changed?

Structured data gives each fact a place, but structure alone does not make a fact correct.

Try explaining it.

Could a perfectly readable JSON record give Mira the wrong age?

Open a possible explanation

Yes. Valid structure and correct story facts are separate checks. You can parse a record successfully and still need to compare it with the agreed character notes.

Choose what to try next

Keep exploring, or stay here and try another variation.