PRACTICAL SKILLS / PRACTICAL GUIDE

Critical Thinking: A Practical Five-Step Method

Critical thinking is the disciplined process of clarifying a question, examining evidence, testing assumptions and reaching a conclusion that matches what the evidence supports.

By Mika vs Guru Editorial Team · Reviewed 18 September 2026 · About 5 min read

The claim we're going to test

Consider a fictional example. Somebody in your group chat posts a screenshot: "My cousin used the Falcon Alerts newsletter and turned $2,000 into $9,000 in three months." Three people have already replied with fire emojis and one is asking for the signup link. This is exactly the moment critical thinking earns its keep — not because the claim is obviously false, but because reacting to it takes ten seconds and checking it takes ten minutes.

The five steps below don't require special training. They force you to slow down in a specific order: define what you're actually deciding, separate the claim from the reasons offered for it, look for whatever would prove it wrong, calibrate your conclusion instead of rounding it to true or false, and write the reasoning down so you can check it later.

Step 1: Define the decision

Before touching the evidence, name what you are actually deciding. It isn't "is this claim true in some cosmic sense" — it's narrower: should I pay $49 a month for this newsletter, or should I stop scrolling and move on? A vague question like "is this legit" invites you to collect information forever without reaching an answer. A specific one — "would this be worth $49 a month to me, given what I can verify" — tells you exactly when you have enough to decide.

Step 2: Separate the claim from the reasons

• The claim: Subscribing to the newsletter caused, or reliably produces, large short-term gains.
• The evidence offered: One cousin's report, one screenshot of a brokerage balance, and a testimonials page on the newsletter's own site.
• What's missing: The exact dates, the number of trades that lost money in the same period, whether this is one lucky subscriber among thousands, and any track record the newsletter did not choose to publish itself.

None of that missing information proves the claim is false. It proves the claim, as stated, rests on one flattering data point rather than a track record — and that gap is exactly what the next two steps exist to probe.

Step 3: Seek disconfirming information

Ask directly: what would make this claim weaker? Two things come to mind. First, survivorship bias — subscribers who lost money rarely post screenshots, so the public sample is stacked with winners by default. Second, base rates — tripling $2,000 in three months through short-term trading is rare enough that, across thousands of subscribers, a few will hit it by chance alone, the same way a few coin-flippers will land ten heads in a row.

• Check the newsletter's own disclosures: Look for a dated methodology, full results rather than selected wins, fees, conflicts and clear risk language. Then verify any registration claim independently in the relevant regulator database.
• Look for complaints, not just praise: Search the newsletter name plus "refund" or "review" and read what the losing subscribers say, not only the ones who post screenshots.
• Ask what a typical result looks like: One spectacular result tells you almost nothing about the median outcome for the next thousand people who sign up.

Step 4: Calibrate the conclusion

Run the newsletter claim through that table and the honest label is plausible at best: one trade might genuinely have happened, but "plausible for one case" and "reliable for subscribers generally" are different conclusions, and only the second one is worth $49 a month.

Step 5: Make the reasoning visible

1. Claim: "This newsletter turns modest accounts into large ones within months."
2. Evidence: One secondhand report, one screenshot, one testimonials page written by the seller.
3. Assumption doing the work: That one visible winner represents the typical subscriber, when nothing shown rules out survivorship bias.
4. Remaining uncertainty: No independent, dated track record has been checked yet — that single missing document would move this from plausible to either supported or contradicted.

Common mistakes with this method

• Treating one anecdote as data: A single success story, however specific, is a sample size of one. It can illustrate a pattern; it cannot establish one.
• Rounding calibration to yes or no: Collapsing "plausible but unverified" into "true" throws away the exact information the method was built to preserve.
• Stopping after step one: Defining the question feels like progress, but skipping the evidence check leaves you exactly as informed as before you started.
• Confusing confidence with accuracy: A confident cousin and a confident stranger carry the same evidential weight — zero — until you check what's behind the confidence.

What this method does not do

Five steps do not guarantee the right answer, and they don't replace knowing the subject — reading a newsletter's disclosed statistics still requires understanding what a track record actually shows. What the method does is stop you from mistaking speed for judgement. It's worth the ten minutes on decisions that cost real money or change your mind about something important; it's overkill for deciding what to have for lunch.

What to do next

1. Pick one claim you've actually seen this week — an ad, a forwarded message, a confident friend — rather than a hypothetical one.
2. Write the five steps out in full sentences, even if it feels slow the first few times. The slowness is where the value is.
3. Assign a calibration word, not a verdict, and note the one piece of evidence that would move you to a different word.
4. Revisit the claim in a month. If new evidence arrived, check whether your calibration should have moved — that's how you learn to trust the method.

Sources and further reading

• Stanford Encyclopedia of Philosophy: Critical Thinking ↗

New research into practice: Sleep and Memory: The Awake-Mouse Study, Explained.

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