OpenCyber AcademyLesson map
Lesson 12. Map, example, EX058.
flowchart TD
T["Two clients received the invoice"] --> P["One paid 4800"]
T --> N["One had not paid"]
P --> R["Bank later recovered 3100"]
R --> Q{"Is 3100 the whole payment?"}
Q -->|No| K["Recovery stays partial and uncertain"]
Two amounts are recorded. Their ratio is not a printed success rate.
Logical drawing
clients who received the fake invoice: 2
clients who paid: 1
amount paid: £4,800
amount later recovered: £3,100
success rate: not printed
Learning outcomes
After this chapter, you should be able to:
- Keep the two clients distinct.
- Keep both currency figures.
- Refuse a success rate the book does not print.
12.1 One payment, one recovery, and no rate.
Two clients received the fake invoice. One had not paid. Leo told that client to ignore the email and to use the firm's known bank details. The other client had paid £4,800 that morning and called the bank at once. The bank later recovered £3,100 of the £4,800. The chapter 3 limit stays in force: recovery of paid money is uncertain, and speed is the best help. A recall is not a promise.
4800 - 3100 is 1700. That difference is arithmetic beside the story. It is not a line the firm printed, and it is not a remainder the bank confirmed in this book. A ratio of the two figures would be a success rate. No such rate is printed. Writing "most of the money came back" would replace the two figures with a judgment. The figures stay £4,800 and £3,100.
No other currency amount belongs in the note. This chapter does not add a fee, a balance, or a second transfer. The bank is unnamed. The national fraud reporting service is the place the fraud was reported, and no country is named for it. The data-protection adviser decided a regulator report was required because client financial details were in the mailbox, and the report was filed within the deadline. The deadline length is not printed, and this chapter does not invent one.
Lesson table; scroll horizontally to read all columns →
| Figure | Status |
|---|---|
| Two clients | One paid, one did not |
| £4,800 | Paid that morning |
| £3,100 | Later recovered |
| A percentage | Not printed |
| Further amounts | Not in the book |
12.2 Worked example
Lesson table; scroll horizontally to read all columns →
| Offered sentence | Problem | Decision |
|---|---|---|
| "One client paid £4,800; £3,100 came back." | Both recorded figures | Keep |
| "The other client had not paid." | The second person | Keep |
| "The recovery rate was a success." | No rate is printed | Refuse |
| "A further £500 was also lost." | No such figure exists | Refuse |
Synthetic case. Both amounts are invented, and both stay exact.
Errors and limits
Do not turn the unrecovered part into a new published amount or a rate.
Apply
- EX058 — Two figures. What was paid, what was later recovered, and may a classmate replace those figures with a success rate?
Show marking criteria
Rubric: 3 = £4,800 paid by one client; £3,100 later recovered; the other client had not paid; no success rate is printed; recovery stays uncertain;; 2 = both amounts stay and the rate stays out;; 1 = one amount;; 0 = none.