One laptop, and the version token stays in the lab

Lesson map

Lesson 17. Map, example, EX063.

flowchart TD
  A["Match is not a safety proof"] --> B["Install on one laptop first"]
  B --> C{"Does v2.1 leave the laboratory string?"}
  C -->|No| D["Keep one laptop and the lab token"]
  C -->|Yes| E["The summary has no version"]

The trial is one machine. The version characters belong to the synthetic bytes.

Logical drawing

staff summary
    matched download
    install on one laptop first
    no version number
laboratory bytes
    contain "catalogue-tool v2.1"
    synthetic installer
other staff laptop
    does not receive the tool in this file

Learning outcomes

After this chapter, you should be able to:

1. Keep the install on one laptop.
2. Keep v2.1 inside the laboratory string.
3. Leave the second laptop without the tool.

17.1 A cautious install does not spread, and a laboratory token does not become a version line.

The staff summary says the catalogue download matched and that the tool is installed only on one laptop first, because a match does not prove the software is safe or free of bugs. The library has two staff laptops. The file never says the second one received the tool. Inside lab_checkfile.py the synthetic bytes include the characters catalogue-tool v2.1. That string is the laboratory input, fifty copies of it, not a version written on the staff page. The five-sentence summary records no version. A classmate who writes "v2.1 installed on both laptops" has moved a laboratory token onto a machine the summary left alone, and then onto a second machine. Leo keeps the trial at one laptop and leaves v2.1 in the script.

17.2 Worked example

Lesson table; scroll horizontally to read all columns →

Synthetic case. The second laptop is not given the catalogue tool.

Errors and limits

One laptop is a limit on harm. It is not a certificate that the chosen laptop is safe.

Apply

• EX063 — Both laptops, version 2.1? The summary installs the tool on one laptop first. The laboratory bytes contain catalogue-tool v2.1. May the note say version 2.1 is now on both staff laptops?
  Show marking criteria

  Rubric: 3 = no; the install stays on one laptop; the second laptop does not receive it; v2.1 stays inside the synthetic bytes; the summary records no version; do not edit lab_checkfile.py;; 2 = one laptop, and the token stays in the lab;; 1 = one limit;; 0 = none.