The questions every source has to answer before it earns a place in your literature
Many PhD researchers read fast — but accept too easily. The critical question is not "do I understand this paper?" It's "should I trust this paper to do work in my thesis?"
That trust is earned by answering three questions before any source enters your literature.
When you read a paper this week, did you ask yourself "is this argument actually defensible?" — or did you absorb it because it was published?
Most early-stage PhDs default to acceptance because the paper is in print. Critical evaluation is the move that makes you a researcher, not a reader.
Of those three, which one do you find hardest to answer when reading? Most researchers answer #2 or #3 — assumptions and silences are harder to see than claims.
Putnam, R. (2000). Bowling Alone. Argues American civic life has declined since the 1960s, evidenced by falling participation in voluntary associations (bowling leagues, PTA, civic clubs).
1. What's the claim and how strong is the evidence?
2. What does Putnam assume that you might not?
3. What does Putnam NOT cover that you'd expect?
Speak each one aloud before clicking the reveal.
1. Claim and evidence: The decline narrative is supported by survey data on traditional associations — strong on those metrics, weaker on the assumption that traditional associations are the right indicator of civic life.
2. Assumption to challenge: Putnam treats face-to-face civic engagement as the gold standard. He assumes online communities, identity-based organising, or informal mutual aid don't count. A 21st-century researcher might disagree.
3. What's missing: Almost no engagement with race or class as variables. The data is largely undifferentiated middle-class America. A researcher on diaspora or marginalised communities would flag this immediately.
Notice: each answer is specific. "It's biased" is not evaluation. "He treats face-to-face engagement as the gold standard and ignores online and informal forms" — that is.
Pick a paper you've read this week. Apply the three questions. Write one sentence per question. Be specific — name the assumption, name the silence.
Reading without evaluation produces summaries. Reading WITH evaluation produces a position. Your thesis is your position.
The three questions get you started. The audit goes deeper. Six dimensions every source has to be checked against — not all in detail every time, but enough that you'd notice if something was off.
In your experience, which dimension do PhDs most often forget when evaluating a source?
Reception (#6). Most researchers evaluate a source as if it exists in isolation. But a 1990 paper that has been heavily critiqued and superseded should not carry the same weight as one that has been replicated and built on. The reception of a source is part of its evidential strength.
Practical move: when you cite a foundational source, also cite ONE significant response to it. That shows you know how the field has handled the work.
"Smith (2018) argues that X."
Pure summary. No audit visible. Reader has no way to judge whether Smith's claim deserves weight.
"Smith's (2018) ethnographic study of three urban districts argues X — a finding partly corroborated by Lee's (2021) larger survey but contested on methodological grounds by Hassan (2023), who notes the absence of comparative cases."
Methodology, scope, reception all visible. Reader knows where Smith sits in the field.
Take a source from your literature. Write a single sentence that includes: the claim + the methodology + at least one piece of reception (a corroboration or a critique).
One sentence with method + claim + reception is worth a paragraph of pure summary. It tells the reader you've audited the source.
Evaluation is only useful if you can find it again two years later. The discipline is to capture your evaluation IN your note, not in your head.
The Cornell + Zettelkasten lesson taught you to write atomic notes. The Linking lesson taught you to link them. This lesson adds one more layer — the citation card: an evaluation alongside every source.
Read the card again. What can you do with it that you couldn't do with a one-line note?
Three things:
Pick one paper you cite often. Fill in each row.
Was there a row you couldn't fill? Which one? That's the row that tells you what's missing in your reading of this source.
One citation card per important source. By the end of year 2, you'll have 80–120 cards. Your literature review writes itself — you'll just sequence the cards.
Now we put it into practice on YOUR thesis. Pick a paper. Audit it. Build the card. Position it.
Name a paper you've cited (or plan to cite) in your literature review. Author, year, central claim — say it aloud.
This is the most important line. Why are you citing this source? What does it do for your argument? How are you handling its limitations?
Read your "My use" line aloud. Does it sound like a reason — or like an excuse? If it sounds like "because everyone cites this," the audit isn't done. A strong "My use" line names what the source does in your thesis.
The audit sometimes reveals a source you've been leaning on isn't strong enough to support what you're using it for. That is the audit doing its job. Don't ignore the finding because it's inconvenient. Replace the source or qualify your claim.
The viva panel will not just ask you to summarise your sources. They will ask you to defend your selection. The questions below are real — examiners use versions of these constantly.
"Why did you rely so heavily on Source X when Critic Y has challenged its central methodology?"
Three moves: (1) acknowledge the critique; (2) explain what Source X still gives you that the critique doesn't undermine; (3) name how you've qualified the use in your thesis.
"I take the methodological critique seriously — Critic Y is right that the original survey design treats traditional associations as a proxy for civic life as a whole. But what Source X still gives me is the longitudinal data on those traditional associations, which is foundational for the decline narrative regardless of the proxy concern. In Chapter 3 I cite Source X for the temporal pattern alone, and explicitly draw on Y's critique when I extend the framework to include online and informal forms."
Notice: not defensive. Acknowledges the critique, narrows the use, and shows how the limitation has been handled in the thesis itself.
"Your literature is heavily weighted toward [a particular tradition]. What sources have you deliberately chosen NOT to engage with, and why?"
Examiners ask this to test whether your selection is principled or accidental. The bad answer is "I hadn't thought about it." The strong answer names the alternative tradition, explains the reason for the boundary, and acknowledges what's lost by drawing it.
"If you could only keep five sources from your literature review, which would they be — and why?"
This question forces you to name your load-bearing literature. If you've evaluated each source properly, you'll know within seconds which five your thesis cannot do without. If you haven't, you'll panic.
Try answering it now. The answer is your literature review's spine.
Three things to do before next lesson:
Bring all three to next lesson. We'll pressure-test the cards as if the viva were tomorrow.
Critical evaluation is not skepticism. It's curatorship. You're not trying to demolish every source — you're deciding which ones earn a place in your thesis and on what terms.