The Writing Desk · Bias

Cognitive Bias in Your Own First Draft

7 min readUpdated September 2026

Logical fallacies are errors in an argument's structure. Cognitive biases are errors in the thinking that produced it — and because they operate before you write a word, they're much harder to see in your own work. The one-sided draft, the too-tidy conclusion, the objection you never considered: these usually aren't laziness. They're bias doing its quiet work.

The biases that shape a draft

A few show up again and again in writing meant to persuade:

You can't argue your way out of your own blind spot. You can only build a process that looks where you won't.

See the bias in your draft
The Writing Lab flags cognitive biases alongside logical fallacies — the blind spots you can't easily catch in your own writing.
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Why your own bias is invisible

Bias is easy to spot in writing you disagree with and nearly impossible in writing you produced, because you already accept the conclusion. Everything that supports it feels like evidence; everything against it feels like an edge case. This is the same mechanism behind confirmation bias — and knowing about it isn't enough to switch it off. You need a method that compensates for it.

How to edit bias out

Bias and fallacy, together

The two problems compound: a cognitive bias produces a lopsided view, and then a logical fallacy smuggles it into the argument as if it were reasoned. Catching them means editing at both levels — the thinking and the structure. Do that consistently and your writing stops merely expressing what you already believed, and starts making a case a skeptical reader can actually follow.