# How to explain technical concepts to non-technical colleagues

Explain a technical problem, system or recommendation without dumping the architecture: start with the consequence, keep the necessary mechanism, and make the decision or next step clear.

[Canonical page](https://ptichi.com/goals/explain-technical-to-non-technical)

**Start with the consequence the listener needs to understand.** Explain enough mechanism to make it credible, keep the important boundary, and state the decision or next action. If you use a slide, show where the relationship appears and explain what it means for this listener.

A technical explanation can be completely accurate and still fail if the listener has to discover the relevance on their own.

## What the listener needs is not “less technical”

The usual advice is to simplify. That can be misleading.

A non-technical listener may need an exact technical boundary because it changes a decision. The useful question is not:

> How do I remove technical detail?

It is:

> Which technical detail changes what this person should understand, decide or do?

That produces a better hierarchy.

## Weak and better versions

In this authored scenario, a temporary downstream failure no longer blocks the user request; the event is retained and retried later. Those are supplied facts for the example, not guarantees of every event-driven design.

Weak:

> We moved this integration to an event-driven architecture with a queue between the services, and retries are asynchronous instead of happening inside the request path.

Accurate, but the listener still has to ask why that matters.

Better:

> A temporary downstream failure will no longer block the user request. The event is queued and retried separately, so some updates may arrive later. We need to decide how much delay this process can tolerate.

The mechanism stayed. It moved behind the consequence.

## Use three layers

1. **Consequence:** what changes for the user, business process, risk or decision?
2. **Mechanism:** what is the smallest technical explanation needed to understand why?
3. **Boundary:** what trade-off, exception or limitation must not disappear?

Add more depth when the listener asks for it.

This is not “dumbing it down.” It is progressive disclosure in conversation.

## Change the audience, not only the vocabulary

For a project lead:

> A temporary integration failure no longer blocks the user. The trade-off is delayed processing, so we need to agree how much delay the process can tolerate.

For a support colleague:

> If an update is delayed, the user does not need to repeat the action. The system keeps the event and retries it; the thing to check is whether the update eventually arrives.

For an engineer who owns the integration, the queue, retry policy and failure modes may belong much earlier.

The technical fact can stay the same while the useful entry point changes with the listener's job.

## When a slide carries part of the explanation

With a slide, your listener can inspect something while you speak. They need to locate the relevant part and understand its relationship to your message. Naming every box can leave that relationship unexplained.

For the integration scenario, sketch these two lines on paper or in a slide you already use:

> **A request can finish before the connected service is updated**
>
> Upper line: user request → save event → return response
>
> Lower line: worker → connected service → retry after a temporary failure

This is an authored sketch, not a description or measurement of a real deployed system. In this scenario, the worker processes the saved event. The lower line may finish later; the upper line does not wait for the connected service. The delay is a boundary you must explain, even if the diagram looks tidy.

A spoken explanation could be:

> Follow the upper line first. The user's request can finish once its event is saved. The worker on the lower line handles that event separately, so a temporary failure in the connected service no longer blocks this request. The update may arrive later. We need to agree how much delay the process can tolerate.

The location cue tells the listener where to look. The explanation supplies the connection, consequence and condition. If you only say “this goes here,” the listener may have to invent all three.

Before rehearsing, complete one sentence:

> After this slide, the listener should understand ___, because ___, while remembering ___ .

For this example: the request can finish before the update, because the worker processes the saved event separately, while delayed updates remain possible. Use that as a meaning key, not a script to memorize.

### Check what the slide and speech each supply

| Question | What to inspect |
| --- | --- |
| Can the listener find the relevant part? | Ask which line or step you were referring to |
| Can they explain the relationship? | Ask why the request can finish before the update |
| Did the condition survive? | Ask what could still arrive later |
| Was the slide doing most of the explaining? | Note which facts were written, spoken or both |

Keep the slide visible when checking a slide-assisted explanation. An audio-only playback cannot establish whether a listener found the right element. Hiding the slide asks a different question; record that change rather than treating the attempts as equivalent.

Use words such as “upper line” alongside pointing, and check whether the listener can read the actual display. In a call, a pointer may not reach the shared view. If the picture is unavailable or inaccessible to that listener, describe the relevant relationship in words or provide a suitable accessible representation.

## Avoid the two bad extremes

One extreme is architecture dumping:

> It uses topics, consumer groups, retries, dead-letter handling...

The other is false simplicity:

> It is more reliable now.

The first may be irrelevant. The second may hide the mechanism or trade-off that matters.

Useful technical communication keeps enough mechanism to explain the consequence and enough boundary to prevent a misleading conclusion.

## Practice it out loud

Use a real technical topic you know well, or use this scenario. You can practise an ordinary spoken explanation or use the sketch above; choose the format you want to check.

**Scenario:** an integration no longer blocks the user's request when a downstream system is temporarily unavailable. Processing can finish later, so delayed updates are now possible.

Write a factual key before speaking: the consequence, the mechanism, the delay boundary and the decision about acceptable delay. These are supplied scenario facts. They do not guarantee how another architecture behaves.

### Take A

Explain the change to a non-technical project manager.

Do not polish a script first. Note whether the listener can see a slide, what is written on it and what notes you use. If you record, use a recorder you already have; this website does not capture audio or slides.

### Listen

Notice:

- Where does the practical consequence first appear?
- Is the mechanism explained, or only named?
- Are the delay boundary and decision still present?
- With a slide, is the spoken reference specific enough to locate its line or step?

Playback helps you inspect your explanation. You already know the facts, so your own understanding cannot establish what a colleague recovered. With a willing listener, ask what changes, why, and what can still arrive late before showing the key. For the slide version, also ask which part you were referring to. Keep their answer, including partial recovery or “I couldn't tell.”

### Change one thing

Choose one adjustment from the difficulty you noticed. The default is **move the user or process consequence before the architecture**. If that was already clear but the listener could not find the relevant part, instead add one precise location cue when you explain it.

Name the adjustment you chose. Keep the underlying facts and slide content the same; redesigning the slide at the same time adds another change.

### Take B

Explain it again with the chosen adjustment. Keep the listening channel, visible material and preparation support similar, and note other differences. If capture conditions changed, the [recording-comparability guide](/research/can-you-compare-two-voice-recordings) helps you decide which observations still answer your question.

Do not delete the trade-off just to make the explanation smoother.

### Compare

Ask:

- Which take makes the practical consequence easier to recover, and what observation supports that judgement?
- Did the second version preserve the mechanism, delay boundary and decision?
- With the slide, did the listener find the relevant part and explain its relationship? Those are separate observations.

If the second take becomes “it is better now,” you simplified too far.

If the same listener hears both takes, the second attempt includes prior exposure to your message and slide. A different listener introduces a difference between people. Note that history; one informal comparison cannot attribute a change to your adjustment alone. A listener can like the slide or find the labels easily while still missing the delay boundary. Keep preference, location and meaning separate.

### Transfer

For a new message, try this situation:

A data migration is taking longer because one validation step must be rerun after every mapping change. Explain this to a project manager who needs to decide whether to keep the current launch date or reduce scope.

Write this scenario's new key before speaking: repeated validation takes time, mapping changes trigger another pass, and the decision is about date or scope. If you use a slide, sketch those relationships rather than reusing the queue labels. Ask the listener to recover the trigger and decision before showing the key.

Do not copy the previous wording. Changed material checks whether you can choose **consequence → necessary mechanism → boundary** for another decision. It does not erase familiarity with you or establish lasting learning. Change audience or display separately when that is the next question you need to check.

## A listener-recovery check

After one short explanation, could the listener answer:

- What changes for me or the process?
- Why does it work that way?
- What can still go wrong, arrive late or behave differently?
- What do you need me to decide, expect or do?

This is a preparation test, not a score.

The idea of asking for an explanation in the listener's own words is informed by [AHRQ's Teach-Back guidance](https://www.ahrq.gov/teamstepps-program/curriculum/communication/tools/teachback.html). That guidance concerns healthcare communication; it does not validate this workplace exercise or Ptichi's rubric. [The listener-measurement guide](/research/the-listener-is-part-of-the-measurement) explains why the task, question and prior exposure matter.

For a broader version of the same idea, use the [Ptichi Listener Recoverability Rubric v1](/goals/explain-clearly-at-work#listener-recoverability-rubric-v1).

## Common mistakes

**Replacing jargon without changing structure.** “It happens later” can be as unhelpful as “asynchronous” if the consequence remains unclear.

**Leading with implementation history.** The listener may not need the path your team took to arrive at the current design.

**Removing the boundary.** A simpler explanation becomes misleading if it deletes latency, risk, reversibility or another decision-relevant trade-off.

**Using an analogy that creates a new misconception.** An analogy is useful only while it preserves the relationship that matters.

**Trying to prove expertise.** The explanation is not a résumé sample. Detail earns its place by helping this listener.

## What the sources support

[MIT's NSE Communication Lab](https://mitcommlab.mit.edu/nse/commkit/structuring-a-slide-presentation/) advises planning around purpose, audience and a central message, then choosing evidence for each slide. This is communication guidance. It supports a planning approach, not a fixed slide count, speaking speed or proven rehearsal dose.

The author version of [Attend to what I say: Highlighting relevant content on slides](https://arxiv.org/abs/2601.10244v1) evaluates alignment methods on 14 conference videos with 150 slides. Its 33-participant graduate-level user study asks about highlighting preference, not comprehension, retention or speaker training. The arXiv record dates this version to 15 January 2026 and says it was accepted at ICDAR 2025; we checked its full HTML text, not the proceedings or underlying data.

In its transcript-correction evaluation, slide guidance worsened word error even as some alignment measures improved. Matching a slide cannot establish fidelity to speech. The paper does not validate the authored practice on this page.

## Our read — rehearse the relationship the listener needs

The useful addition to this guide is a visual reference you can check beside the factual key. “Explain this diagram” becomes: can the listener find the relevant path, explain why it matters and keep the condition intact? That can guide a speaking adjustment without turning a slide into a memory test.

The strongest counterargument is that an effective diagram can already explain much of the mechanism. Repeating every label may add clutter. Keep the useful visual support and spend your spoken explanation on the connection or boundary that the listener still needs. For an expert review, inspecting the mechanism itself may be the whole job.

This changes our editorial check for prepared material: note what the artifact supplied, what was said and what the listener recovered. Automated matching, a pleasant visual effect and a faithful transcript answer different questions. We do not know whether an automatic slide cue would improve this rehearsal or transfer to a real conversation.

We would change this starting recommendation if direct comparisons showed another approach preserved the relevant meaning with less effort for the intended audience, including people who cannot use the visual display. Any future Ptichi slide feature would need its own evidence. This guide activates no slide-analysis tool and reports no Ptichi participant experiment.

## Where this advice breaks

Some conversations are technical reviews. In those cases, the mechanism may be the main point and should not be delayed behind a business summary.

Also, “non-technical” is not one audience. A finance leader, operations manager and legal reviewer may each need different boundaries from the same system.

## Continue with Ptichi

Choose one technical explanation you expect to give soon. Record it once, listen for where the consequence first appears, move that consequence earlier if needed, and try again. Then explain a different technical issue. Check a different listener or display separately when that is the next useful question.

The [pre-meeting rehearsal](/practice/practice-before-a-meeting) provides a short practice loop and is available free without an account. The website guides work now; use a recorder and presentation tool you already have when they help. Ptichi's desktop recorder remains in development, with no public installer. Prepared-artifact rehearsal remains research work; no slide-analysis tool is released. You can leave this exercise with a clearer explanation or a useful unchanged slide.

Interactive controls remain on the canonical page. This is a saved text representation, not a completed practice or a product result.

## Sources and limits

- [Tool: Teach-Back](https://www.ahrq.gov/teamstepps-program/curriculum/communication/tools/teachback.html)
  Teach-back asks a listener to explain information or actions in their own words so the speaker can check whether the information was explained clearly rather than relying on a yes/no understanding question.
  Healthcare communication guidance; it does not validate the Ptichi Listener Recoverability Rubric, workplace-speech outcomes, A/B rehearsal, or product efficacy.
- [Structuring a Slide Presentation — MIT NSE Communication Lab](https://mitcommlab.mit.edu/nse/commkit/structuring-a-slide-presentation/)
  Plans a technical presentation around audience, purpose, a central message and evidence for each slide.
  Communication guidance, not a controlled trial or a validated rehearsal dose, slide count or Ptichi outcome.
- [Attend to what I say: Highlighting relevant content on slides](https://arxiv.org/abs/2601.10244v1)
  Evaluates speech/slide-region alignment and a small highlighting-preference study; slide-guided correction can worsen transcription error.
  Author version; proceedings/data not independently checked. Preference and alignment are not comprehension, retention or speaker-training outcomes; method-ranking prose is inconsistent.

## Evidence and limits

- authored-example: This page includes a Ptichi-authored example built for explanation or rehearsal.
  It is an editorial example, not an observed-user result, experiment or proof that Ptichi improves speech.
- bounded-self-listening-exercise: This page includes a bounded listen-and-compare exercise that you can run with your own recorder.
  The exercise does not prove that Ptichi improves speech or that a second take will generalize to other listeners or situations.

## Try this next

[Two thoughts. One useful pause.](https://ptichi.com/practice/boundary-contrast)

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