You may know that you can do something.
But can you explain it?
That question matters more than it first appears.
"I know React" does not tell much
Compare:
"I know React."
with:
"I built a React application that consumes an API, handles loading and error states, validates user input and uses reusable components. I can explain the decisions I made and the problems I encountered."
The second statement gives someone evidence.
It creates a conversation.
Explaining your work shows understanding
When you explain a project, you have to think about:
- what problem you were solving
- who the user was
- what you decided to build
- why you chose a particular approach
- what went wrong
- how you tested it
- what you would change next time
This process can expose gaps in your own understanding.
That is useful.
Communication is part of technical work
You may need to explain something to:
- another developer
- a technical lead
- a client
- a product person
- a manager
- a user
They will not all want the same explanation.
Professional communication means adjusting the explanation without losing the important information.
Your work should be understandable
- Documentation is another form of explanation.
- So are pull requests.
- So are commit messages.
- So are demonstrations.
- So are technical discussions.
If you can build something but cannot explain how it works or why you built it, you are leaving part of your professional value invisible.
AI can help you prepare, but you need to own the explanation
- AI can help you structure a project summary.
- It can ask you interview questions.
- It can help identify gaps.
But if you cannot explain your own project without AI, you have a problem.
The explanation needs to belong to you.
This matters when looking for work
- A portfolio can show what you built.
- An interview can explore how you think.
- A conversation can reveal whether you understand the work.
A strong professional can move between all three.
The lighthouse helps others see where you are
Your work is easier for other people to understand when you can explain it clearly.
You are giving them a map.
They can see where you started, what you built, what changed and where you learned.
Do not only learn how to build things.
Learn how to explain the thinking behind what you build.