EssayHero can give you useful feedback on your writing. But it can't do everything a human marker can.

This post is about what AI feedback gets wrong, and why that matters for how you use it.

The Knowledge Cutoff Problem

AI models are trained on data up to a certain date. After that, they don't know what happened.

If you write about a recent news event, the AI might not recognise it. If you reference a new policy or a recently published study, the AI has no context.

It might mark your example as unclear or unsupported, when actually the problem is just that it's never seen this information.

Most Relevant for Current Affairs Topics

This is especially relevant for HKDSE essays that ask about current events or local Hong Kong issues.

The AI knows historical context well. Recent developments, less so.

The Creative Blindspot

AI feedback is trained on patterns. It recognises what well-structured essays typically look like, how arguments usually flow, what conventional organisation means.

But what if your essay is deliberately unconventional?

How AI Responds to Bold Choices

A human marker might read a bold structural choice and think: "Interesting. This is risky but it works."

An AI might read the same thing and flag it as disorganised. The AI doesn't understand creative intent. It sees deviation from pattern and assumes error.

Context Blindness

Your teacher knows your previous work. They've seen your improvement over the term.

They know what you're capable of, what topics interest you, what mistakes you tend to make.

The AI sees one essay in isolation.

Why Context Matters for Grading

This matters more than you might think. A teacher grading your work is implicitly considering your trajectory.

They might give credit for growth, or push harder because they know you can do better.

The AI has none of this context. It grades what's on the page, nothing more.

Not a Predictor

EssayHero gives you an estimated level based on criteria analysis. But this is not a prediction of your actual DSE score.

Why Real Marking Is Different

Real marking involves human judgement that AI cannot replicate:

• Moderation — examiners moderate each other
• Discussion — borderline cases are debated
• Experience — the marking scheme is applied with nuance from years of practice

How to Use It Anyway

None of this means AI feedback is useless. It just means you should use it for what it's good at.

Four Smart Ways to Use AI Feedback

• Criteria understanding — The AI explains why it gave certain scores, referencing specific criteria. This helps you understand what markers look for.

• Pattern recognition — If the AI flags the same issue across multiple essays, that's probably a real weakness worth working on.

• Practice iteration — Submit, read feedback, revise, submit again. The speed of AI feedback makes this cycle possible in a way that waiting weeks for teacher feedback doesn't.

• Self-assessment — Before showing your essay to a teacher, run it through EssayHero. It might catch basic issues you can fix yourself, saving your teacher's time for higher-level feedback.

Questions about AI limitations or anything else? Email hello@essayhero.app.