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Jack Robinson (idiom)

Jack Robinson (idiom) is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jack Robinson (idiom) rather than just read about it. In short: Jack Robinson is a name present in two common figures of speech. When referring to Jack Robinson, it is used to represent quickness.

Key takeaways

  • Jack Robinson (idiom) belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Jack Robinson (idiom) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Jack Robinson (idiom) from memory before moving on to harder problems.

Reference excerpt

Jack Robinson is a name present in two common figures of speech. When referring to Jack Robinson, it is used to represent quickness. In contrast, the phrase "(A)round Jack Robinson's barn" has the opposite connotation, implying slowness, as it is often used to refer to circumlocution, circumvention, or doing things in roundabout or unnecessarily complicated ways.

Etymology and common variants

Connoting quickness Multiple citations explain references to Jack Robinson as meaning quickness of thought or deed. The normal usage is, "(something is done) faster than you can say Jack Robinson", or otherwise, "before you can say Jack Robinson". The phrase can be traced back to the eighteenth century.

Examples

The phrase first appeared in print in 1778 in Frances Burney's novel Evelina ("I'd do it as soon as say Jack Robinson"), but probably was in wide use before that time. According to Grose's Classical Dictionary (1785), the reference is to an individual whose social visits were so short that he would be departing almost before his arrival was announced. Supposedly, an English gentleman of the early nineteenth century named Jack Robinson was a person who changed his mind. A person had to be quick to catch him in a decision. Sir John (Jack) Robinson, the Constable of the Tower of London from 1660 to 1679, held at the same time a judiciary appointment in the nearby City of London, and could and did condemn a felon in the city, then have him transported to the Tower where he commanded the execution, with the entire process completed "faster than you can say Jack Robinson". John "Jack" Robinson (1727–1802) was Joint Secretary to the Treasury in England from 1770 to 1782 and regularly acted as a Government Whip, responsible for organising elections and political patronage. Of his reputation for political fixing, Nathaniel Wraxall wrote: "No man in the House ... knew so much of its original composition, the means by which every individual attained his seat, and, in many instances, how far and through what channels he might prove accessible." Therefore, fixing something "faster than you can say 'Jack Robinson'" was very fast indeed. Yet another story relates the origin of the phrase to a comic song of the 1840s, written and performed by Tom Hudson, which tells of a sailor who returns from a voyage to discover that his wife has married another sailor in his absence. In 1840, an article from the York Herald used the Jack Robinson idiom, saying, "A fox having been started, two hounds present, immediately gave chase, but reynard having gallantly turned upon his adversaries, they deemed it the safer plan to 'cut their sticks,; and yelped from the field before you could pronounce 'Jack Robinson.'" Variants The similar phrase, "Before you can say 'Knife!'", dates from at least 1850, when it appeared in Charles Dickens' Household Words. In the late nineteenth century we have Sooner than ye'll say "Jock Hector!", He'll them describe or draw their picture.

Connoting slowness or roundaboutness In contrast, the phrase "(A)round Jack Robinson's barn" has the opposite connotation, implying slowness, as it is often used to refer to circumlocution, circumvention, or doing things in roundabout or unnecessarily complicated ways. In response to an inquiry by Ken Greenwald (a forum moderator at WordWizard), Joan Houston Hall (Editor of the Dictionary of American Regional English (DARE) project at the University of Wisconsin at Madison) researched the term's etymology. Her findings are listed below, chronologically. Examples

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Jack Robinson (idiom)

Start with the simplest possible case. Write down what Jack Robinson (idiom) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jack Robinson (idiom) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jack Robinson (idiom) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jack Robinson (idiom)

In research
Jack Robinson (idiom) appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Jack Robinson (idiom) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Jack Robinson (idiom) is common in secondary-school and first-year university syllabi. It links to neighbouring topics English-language idioms, English-language slang, Jack tales, so understanding it makes those chapters shorter.
In everyday life
Look for Jack Robinson (idiom) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Jack Robinson (idiom) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Jack Robinson (idiom) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Jack Robinson (idiom) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jack Robinson (idiom) in simple terms?

Jack Robinson is a name present in two common figures of speech. When referring to Jack Robinson, it is used to represent quickness.

Why does Jack Robinson (idiom) matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jack Robinson (idiom)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jack Robinson (idiom).

Tags

  • English-language idioms
  • English-language slang
  • Jack tales
  • Timekeeping

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