Why you're missing information in lectures (and how to fix it)

Lectures are a unique format. The professor talks for 90 minutes or 2 hours, often without stopping. Slides keep moving. You try to write everything down and end up zoning out after 20 minutes because you can't listen and write at the same time.

And that's normal. Your brain simply can't do both properly.

The real problem: listening vs writing

Cognitive science research shows that our brains aren't built for multitasking. When you try to transcribe what the professor says while also understanding it, you end up doing neither well.

Classic result: 15 pages of unreadable notes, gaps everywhere, and you remember nothing. This isn't a method or focus problem. It's a design problem: you're being asked to do two incompatible things at the same time.

Classic techniques and their limits

Real-time summarizing

The idea: listen for 30 seconds, understand, then write it in your own words. In theory it works. In practice, the professor doesn't stop while you rephrase. You miss what comes next while you're still writing.

Abbreviations

"govt" for government, "→" for "leads to". It speeds up writing but doesn't solve the fundamental problem: you're still in secretary mode instead of actually listening.

Slides as a safety net

If the professor shares slides, you can focus on what they say beyond the slides. But not all professors share them, and often the most important content is what they say out loud.

What works: separating listening from writing

The real solution is to stop trying to do both at the same time. During the lecture, you listen. You're focused, you understand, you make connections. You just jot down a few keywords or questions for yourself.

And the recording takes care of the rest.

With a tool like Hekko, you start recording at the beginning of class, put your phone down, and actually listen. After class, you get:

• The complete transcription of everything that was said
• Structured notes in your preferred format (Cornell, structured, Q&A, concept/explanation) — including the Cornell method, which is especially useful for self-testing
• A revision sheet ready to use

The 24 hours after class

Whether you take notes manually or with a tool, what you do after class is crucial:

1. Review your notes that same evening while it's still fresh
2. Highlight the 3-5 key concepts
3. Write 2-3 questions you might see on the exam
4. Identify what you didn't understand so you can ask questions

The difference is that with complete, structured notes, this step takes 15 minutes instead of an hour deciphering hieroglyphics.

The bottom line

The problem in lectures isn't that you take bad notes. It's that you're being asked to do two things at once when your brain isn't wired for it. The best strategy is to free up your attention to listen and let technology capture the content. Once your notes are solid, you can apply the science-backed revision techniques that actually move the needle at exam time.