Begin with a decision you can picture: choosing a room, sharing equipment or correcting an announcement. Ask what is known, what matters and what might happen next. Those questions need different kinds of answers. A fact about room capacity cannot, by itself, settle whose convenience should carry most weight.

The sixteen meanings below identify the senses used in this guide. Some words have other meanings in other settings. Try completing a plain sentence before adding the new term: “We can change this later” gives provisional a useful starting context.

These words are tools for making your reasoning available to another person. If a term makes the sentence harder to understand, explain it or choose a simpler phrase. Precision depends on the connection you make, not the length of the word.

Imagine a group planning an afternoon of board games. The organiser has two possible rooms. One is nearer the bus stop; the other has a more attractive display area. Before comparing those features, the group needs a room that is available at the agreed time, can hold everyone and may be used for the activity.

In this fictional plan, those conditions are prerequisites. The display arrangement is discretionary: the group can choose it, change it or leave it out. Giving every feature a score can hide this distinction. Several attractive extras do not make an unavailable room usable.

Write two short headings: “Required for this plan” and “Preferences we can compare.” Explain why each item belongs where you put it. A preference can become a requirement when the purpose changes. A quiet room might be pleasant for one activity and essential for making a clear sound recording.

Now compare the options that meet the requirements. Name an upside and a downside of each. Being closer to transport may help some members; having more space may help the activities. Ask the affected people what difference those features make, rather than assuming that your own convenience describes everyone’s situation.

A concession might be choosing a simpler display so the group can use the nearer room. That does not prove the display was unimportant. It records what someone accepted to make the arrangement work. A clearer recommendation is: “Both rooms meet our requirements. I prefer this one because… The drawback is… We can address it by…”

Consider these invented records from two batches of craft kits. In the first batch, eight of forty kits were missing a part. In the second, six of sixty were missing a part. Someone writes, “The number of incomplete kits has halved.” Check which quantity actually changed.

• The count fell from eight incomplete kits to six: two fewer.
• The proportion fell from 8 ÷ 40 = 20% to 6 ÷ 60 = 10%.
• The difference between those proportions is ten percentage points.
• The new proportion is half the old proportion: a 50% relative decrease in the rate.

Singapore’s Ministry of Manpower statistics guide distinguishes an absolute difference from a relative change calculated against an earlier value. It also distinguishes percentage-point differences from percentage changes. The kit numbers here are an original example, not labour-market data.

The count did not halve. It fell by two, which is a 25% decrease from eight. The rate did halve, from 20% to 10%. Both calculations can be correct because they compare different quantities. Say whether you mean a count, a proportion or a change in that proportion.

A suitable revision is: “The share of incomplete kits fell from 20% in the first batch to 10% in the second.” Retain the batch sizes when they matter to the reader. This describes the records; it does not show that every future batch will contain exactly one incomplete kit in ten.

Before making a decision, ask what the remaining problem means. Six people still lacked a part. A lower rate may be encouraging while replacement parts are still needed. Clear arithmetic helps you describe the change; it does not automatically decide whether the result is acceptable.

Three groups have one hour to share a camera. Equal twenty-minute sessions are easy to describe. One group asks for thirty minutes because its scene takes longer to set up. Giving it that time would leave fifteen minutes for each of the other two groups. What would make either arrangement equitable?

Ask about the purpose of the arrangement. Is everyone meant to have the same equipment time, or a reasonable chance to complete one agreed task? Does the longer setup belong to the shared project, or to an optional extra? These are relevant questions; being a close friend of the person organising the bookings is a different kind of reason.

The Markkula Center for Applied Ethics’ framework separates factual information from questions about how people ought to be treated. Its discussion of justice allows a defensible standard, such as need or merit, without requiring identical treatment in every respect. It also recognises that ethical perspectives can lead to different answers.

Our camera example is a suggested discussion, not an answer supplied by that framework. State a defensible rule, apply it consistently and explain why the difference between the groups matters. “Thirty minutes for our friends” is harder to justify than a rule everyone could use when the same relevant circumstances arise.

Consider proportionality when responding to a problem. If a team returns the camera a few minutes late once, ask what response would address that delay. A reminder or clearer handover arrangement and exclusion from every future project have very different consequences. A more restrictive response needs a stronger justification.

You can disagree about the best rule while discussing it carefully. Identify whether the disagreement concerns a fact, the purpose of the activity or the weight given to competing needs. That gives the conversation somewhere specific to go.

Imagine a games club considering a card system for borrowed boxes. The hoped-for benefit is knowing which games are in use. A foreseeable downside is extra work when everyone is leaving. Calling the idea “obviously better” skips the question of whether the benefit will justify that work.

For this fictional low-stakes choice, the organiser proposes a provisional arrangement for two meetings. The members will try it and then decide whether to keep, simplify or stop it. Before starting, they agree what to check: can they locate the boxes, are the cards understandable, and does the extra task create a practical problem?

This is an original discussion activity, not a validated evaluation method. The important step is making the decision open to useful correction. Record what would change your mind while the outcome is still unknown. Otherwise, it is tempting to describe whichever result occurs as the success you intended.

A provisional rule and a tentative explanation are different. The rule has a temporary status: the club has agreed to revisit it. The explanation has limited certainty: perhaps the cards helped people locate games, but the meetings were unusually quiet. You can describe both without pretending that a short trial answers every question.

Prudence does not require waiting until nothing is uncertain. Ask what is reasonable to check before committing, how difficult the decision would be to undo and who bears its drawbacks. Keep the scale of the check suited to the decision. A temporary card system and an expensive permanent installation would justify different levels of investigation.

At the review, describe the experience, listen to the people doing the work and revisit the original purpose. A change of mind can be well reasoned when it responds to information you agreed was relevant.

Read this original fictional passage:

Leila’s makers’ group printed one hundred flyers for a weekend session. The flyers said that all materials would be provided. Before distribution, the organisers decided to offer an advanced project that required participants to bring their own frames. A member suggested handing out the flyers unchanged because the printing was already paid for. Leila proposed adding a clear correction beside the project description and updating the online announcement.

What needs to be rectified? The promise on the flyer no longer describes the full plan. Someone could reasonably use that promise to decide what to bring. The fact that printing has already happened explains why a correction is inconvenient; it does not make the old wording accurate.

Consider a remedy by asking what problem it would solve. A small note that nobody can notice may change the paper without giving readers usable information. A clear correction beside the project description could explain that starter materials are supplied but the advanced project requires a frame. The organisers still need to confirm that this revised statement is true.

Leila’s proposal preserves useful printed material while correcting the changed promise. Another group might choose to reprint. Compare the options by their accuracy, clarity and practical consequences. The passage gives no printing prices or distribution deadlines, so it cannot establish the best option in every circumstance.

Now change one fact: half the flyers have already been handed out. Correcting the remaining copies no longer reaches everyone affected. Ask what additional communication would help previous readers obtain the updated information. The foreseeable problem is different, so the response may need to change.

Write a three-sentence decision note: what changed, which correction you recommend, and which uncertainty remains. Avoid adding blame the passage does not support. The group changed its programme; the text does not say that the original promise was deliberately false. Careful vocabulary keeps the remedy focused on the actual problem.

Choose a pair that makes a useful contrast: prerequisite and discretionary, or provisional and tentative. Explain the distinction using one of the situations above. Then ask whether you can use it accurately without repeating the original sentence.

1. Picture the situation. Say what is happening before naming the new word.
2. Explain the distinction. Identify the detail that makes one description fit better than another.
3. Test a near miss. Change one detail and decide whether the term still applies.
4. Move to another setting. Try the same distinction in a recipe, shared timetable, project plan or announcement.
5. Return and repair. Revisit the word later, check the intended meaning and correct the uncertain part.

For example, having the ingredients needed for a chosen recipe is a prerequisite; adding an optional garnish is discretionary. If the purpose of the activity is to demonstrate that garnishing technique, its role changes. The category follows the purpose and conditions, rather than the object’s appearance.

If an explanation sounds polished but remains vague, ask for an example and a case that would not fit. “This is equitable” needs a reason about the arrangement. “This is provisional” needs an account of what could confirm or change it. Using the term adds responsibility to explain.

Keep a brief record if it helps: “Explained why the rate halved while the count did not.” That captures a specific connection. This practice sequence is an editorial suggestion, not a tested timetable. Speaking, drawing or discussing the idea in another language can all support the conversation; add the English word to the meaning you have made clear. For further examples of recognition, recall and flexible use, see eduKate’s guide to checking whether a vocabulary word has been learned.

Do I need to learn all 200 words?

No. The bank organises possible targets within this series. Choose words that help with questions you actually encounter. Familiar entries can acquire more precise uses, while unfamiliar technical entries can wait. The list does not measure intelligence or set an annual requirement.

Why practise ordinary decisions with advanced vocabulary?

A concrete situation gives you something against which to check a meaning. Once the distinction is clear, try it in a less familiar setting. A word is more useful when you can explain what it changes in your understanding.

Does a defensible argument have to persuade everyone?

No. People may accept your facts while giving different weight to the aims. Make your reasons available for examination, acknowledge a reasonable objection and state which part of the decision remains a value judgement.

Can numbers decide what is fair?

Numbers can describe time, quantities and effects. A decision also needs a reason for treating those differences as relevant. In the camera example, the same sixty minutes can be divided according to different purposes.

What if I know the idea but forget the word?

Explain the idea in plain language first. Then retrieve or look up the term and connect it with your example. A forgotten label and an unclear concept are different difficulties; work on the part that needs help.

Why do words from earlier guides appear here?

The opening banks contain different target headwords. Explanations still need familiar vocabulary, and useful ideas deserve revisiting. Earlier words help you connect the new ones with knowledge you already have.