Searching "fetch execute cycle" with quotation marks returns:

pages containing that exact phrase. Quotation marks demand the exact phrase in that order, which is how you avoid pages that merely mention each word separately.

The first result in a search is:

ranked by likely relevance and popularity, not correctness. Ranking reflects how likely you are to click, which correlates only loosely with whether the page is right.

Which domain suffix carries the least verification?

.org. .org is unrestricted and may be registered by anyone. .gov and .edu are restricted to government and educational institutions.

Five websites all repeating the same claim constitute:

possibly one source repeated five times. Independence means the evidence was obtained separately. Tracing each back to its origin frequently reveals a single original claim.

Rewriting a paragraph in your own words without citing it is:

plagiarism. The idea belongs to its author regardless of the wording. Paraphrasing requires a citation just as quoting does.

A photograph attached to a current news story should be checked by:

a reverse image search. It shows where else the image has appeared. A genuine photograph from a different year attached to a current event is one of the commonest deceptions.

Content that provokes a strong emotional reaction should be:

checked before sharing. Material engineered to make you angry is engineered to be shared before it is examined. Your own reaction is a useful warning signal.

Computer ScienceCore18 min read

Online Research and Digital Literacy

Q: False information shared by someone who believes it is:

misinformation. The difference from disinformation is intent — disinformation is spread deliberately by someone who knows it is false.

Finding what is true, and being able to show why you believe it

This topic appears in:

1st Year Computer Science · ch.8

Searching well is a skill, not a reflex

Typing a whole question into a search box works surprisingly often and fails silently the rest of the time — you get plausible results and never learn what you missed. A few operators change that.

Quotation marks demand an exact phrase. A minus sign excludes a word. site: restricts results to one domain, which is how you search only government or university sources. filetype: finds PDFs, which is where research papers and official reports usually live.

Operator	Effect	Example
"…"	the exact phrase, in that order	"fetch execute cycle"
−word	exclude results containing it	python −snake
site:	only that domain	site:gov.pk
filetype:	only that file type	filetype:pdf
OR	either term	matric OR SSC
after: / before:	restrict by date	after:2023

Search results are ranked, not judged

A search engine orders pages by how likely you are to click them, not by whether they are correct. A page can rank first because it is popular, recent and well optimised while being entirely wrong. The first result is a starting point, never a citation — and knowing that is most of what "digital literacy" means.

Evaluating a source

Five questions settle most cases, and they are worth memorising as a checklist because the answer is often obvious once the question is asked.

Who wrote it? A named author with relevant expertise, or nobody at all?
Who published it? A university, a government body, a news organisation, or an anonymous blog?
When? A page on a fast-moving topic that has not been updated in eight years is describing a different world.
Why does it exist? To inform, to sell, or to persuade? A page arguing a case is not worthless, but it should be read as an argument.
What is the evidence? Does it cite sources you can check, or assert? Can you find the claim in an independent source?

A domain suffix is a weak signal

.edu and .gov are restricted and therefore mean something. .org is not restricted at all — anybody may register one, and campaigning organisations of every kind do. Judging a source by its suffix alone is exactly the shortcut that misinformation is designed to exploit.

Misinformation, and why it spreads faster than correction

Misinformation is false information shared by someone who believes it. Disinformation is false information spread deliberately. The distinction is intent, and it matters because the responses differ: misinformation is addressed by correcting, disinformation by exposing the source and the motive.

False claims spread faster than true ones for a structural reason. They are written to be shared — surprising, alarming, emotionally engaging — while a careful correction is none of those things. A false headline travels in a second; checking it takes minutes and reaches fewer people.

Check the date. A real photograph from a different year attached to a current event is among the commonest deceptions.
Check the source of an image. A reverse image search shows where else it has appeared.
Read past the headline. Headlines are written to be clicked and frequently overstate the article beneath them.
Look for a second, independent source. Five sites repeating one original claim are not five sources.
Notice your own reaction. Content engineered to make you angry is content engineered to be shared before it is checked.

Citing, and academic honesty

A citation does two things: it credits the person whose work you used, and it lets a reader verify your claim. Both are the point — a reference nobody could follow serves neither.

Plagiarism is presenting another's work or ideas as your own, and it includes paraphrasing without attribution as well as copying text. Changing a few words does not make an idea yours. Where you use someone's exact words, quote and cite them; where you use their idea in your own words, cite them anyway.

Worked example

A student researching AI in agriculture finds a striking claim on a blog: "AI increases crop yields by 70%." How should they proceed?

Note that the blog is not the source — find where the figure came from.A blog quoting a statistic is a signpost, not evidence.
Search for the original study, ideally with filetype:pdf or on a university or government domain.The original will state what was measured, on which crop, and where.
Check the scope: 70% under what conditions, on which crop, over what period, compared with what?A dramatic figure is almost always narrower than the headline suggests — often one crop in one trial.
Look for an independent source reporting a similar result.One study is a finding; several independent studies agreeing is evidence.
Cite the original study, not the blog, and state the conditions the figure applies to.Citing the blog would credit the wrong people and leave the reader unable to check anything.

Trace it to the original study, check its scope, seek corroboration, and cite the study rather than the blog.

Before you leave this chapter

Search operators — quotes, minus, site:, filetype: — change what you find.
Ranking reflects likely clicks, not correctness. The first result is a starting point.
Evaluate a source by author, publisher, date, purpose and evidence.
Misinformation is mistaken; disinformation is deliberate. Both spread faster than corrections.
Cite to credit and to let a reader verify. Paraphrasing without attribution is still plagiarism.

Practice questions

6 questions · 20 marks · full working on every one

Try each one on paper first, then open the working. The marks are shown where they are actually awarded, because that is where they are actually lost.

Short questions

3 · 6 marks

Two marks each, in the style of the short-question section of the paper. Answer in two or three lines.

SQ1[2 marks]

State two search operators and what each does.

Model answer

Quotation marks return only pages containing that exact phrase in that order. site: restricts results to a single domain, so site:gov.pk searches only Pakistani government pages.

Examiner tip. Any two with correct explanations. Naming an operator without saying what it does earns half.

SQ2[2 marks]

Differentiate between misinformation and disinformation.

Model answer

Both are false. Misinformation is spread by someone who believes it is true; disinformation is spread deliberately, knowing it is false. The difference is intent.

Examiner tip. The word "intent" is the mark. The two words are otherwise identical in meaning and are often used interchangeably in error.

SQ3[2 marks]

Why is a .org domain not evidence that a source is reliable?

Model answer

The .org suffix is unrestricted — anyone may register one, including campaigning organisations and individuals with a case to argue. Unlike .edu and .gov, which are restricted, it carries no verification of any kind.

Examiner tip. Contrast it with a restricted suffix. That comparison is what shows you know why the distinction exists.

Solved numericals

2 · 8 marks

Full working, one step per line, with the marks shown where they are awarded.

N1[4 marks]

State four criteria for evaluating the reliability of a website, explaining why each matters.

Full working

Author — is there a named author with relevant expertise, or is the page anonymous?[1]
Publisher — a university, government body or established organisation carries more weight than an unidentified site[1]
Date — on a fast-moving subject an old page may describe a situation that no longer exists[1]
Purpose and evidence — is it informing, selling or persuading, and does it cite sources that can be checked?[1]

Author, publisher, date, purpose and evidence — each with the reason it matters.

Examiner tip. The reason is half of each mark. A bare list of four words typically scores two.

N2[4 marks]

Explain why false information often spreads faster than its correction, and state two things an individual can do about it.

Full working

False claims are often written to be surprising or alarming, which makes people share them immediately[1]
A correction is careful and unexciting, arrives later, and reaches far fewer people than the original[1]
Action: verify before sharing — check the date, look for a second independent source, and read past the headline[1]
Action: notice your own emotional reaction, since content designed to make you angry is designed to be shared before it is checkedthe self-awareness point[1]

It is engineered to be shared while corrections are not. Verify before sharing, and be suspicious of your own strong reaction.

Examiner tip. The point about your own reaction is the one examiners rarely see and it is the most practically useful thing in the chapter.

Long questions

1 · 6 marks

Theory and numerical together, as they appear in the long-question section.

LQ1[6 marks]

A student is writing a report on renewable energy in Pakistan and finds a website stating that solar power now supplies 40% of the country's electricity.

Describe how the student should check this claim.
Explain what should be cited and why.
Explain the difference between quoting and paraphrasing, and what each requires.

Mark scheme

Look for the original source of the figure — an official energy authority, a government statistical release or an international agency[1]
Check the date, since energy figures change annually, and confirm what is being measured — installed capacity is not the same as electricity actually generatedthe capacity/generation distinction is the sharpest point here[1]
Seek a second independent source reporting a comparable figuresites repeating one original are not independent[1]
Cite the original authoritative source, not the website that repeated it, so the reader can verify the figure themselves[1]
Quoting reproduces the exact words, and requires quotation marks and a citation[1]
Paraphrasing restates the idea in your own words, and still requires a citation — the idea is not yours merely because the wording isthis is the point students most often get wrong[1]

(a) trace to the original, check date and what is measured, corroborate (b) the original source, so it can be verified (c) quoting needs marks and a citation; paraphrasing still needs the citation

Examiner tip. The capacity-versus-generation distinction is worth knowing for any energy statistic: a country can have 40% of its capacity in solar and generate far less, because the sun is not always shining.