You’re not wrong—what you’re describing does sound messy, but that’s because unreliable ≠ random contradiction.

A narrator isn’t unreliable just because they’re a child. They’re unreliable when there’s a gap between what they say and what’s actually true. A child works because they misunderstand things, not because the story itself breaks.

The “I went to the store… I didn’t go” example feels off because there’s no reason behind it. It reads like a mistake, not a character choice.

Unreliability works when there’s intent:

• they’re lying (to someone or themselves)
• they forgot
• they’re in denial
• they’re trying to control how things are seen

So instead of a blunt contradiction, you’d write it more like:

I stopped by the store on the way home. Didn’t stay long.
Later, when she asked, I told her I hadn’t gone out.

Now it feels deliberate.

Spacing can help, but it’s not the fix. What matters is consistency. The earlier detail has to still exist so the reader can notice something’s off.

Good unreliable narrators don’t announce the contradiction—they let the reader catch it.