Orang yang cerdas pun bisa salah, jadi yang penting adalah berani mengakui, belajar, dan tidak mengulanginya.

It can be either. Indonesian nouns usually do not change form for singular vs. plural.

So orang can mean:

• a person
• people

In this sentence, the meaning is generic, so English usually makes it plural: Even smart people can be wrong. But the Indonesian word itself does not explicitly mark plural.

Yes, orang cerdas is also possible.

Here, yang introduces a descriptive clause:

• orang yang cerdas = people who are intelligent

Without yang:

• orang cerdas = intelligent people / smart people

Both are natural. The version with yang can feel a little fuller, more explicit, or slightly more formal.

pun here means even.

So:

• orang yang cerdas pun bisa salah = even intelligent people can be wrong

It adds a sense of concession or emphasis: not only ordinary people, but even smart people.

A useful thing to notice is that pun often comes after the word or phrase it emphasizes.

Here it is mainly about possibility.

• bisa salah = can be wrong / can make mistakes

It does not mean smart people have the skill to be wrong. It means that being wrong is still possible for them. Indonesian bisa can express both ability and possibility, and context tells you which one is intended.

salah can mean:

• wrong
• mistaken
• at fault
• sometimes to make a mistake, depending on context

In this sentence, it means something like:

• be wrong
• make mistakes

So bisa salah is a natural Indonesian way to express the idea that someone is not always correct.

It can mean both, depending on context.

In this sentence, jadi is a connector meaning:

• so
• therefore
• thus

So the sentence structure is:

• Even smart people can be wrong, so what matters is...

This is different from jadi meaning become, as in:

• Dia jadi guru = He became a teacher

Literally, yang penting is something like:

• the important one
• the important thing

More naturally in English, it means:

• what matters
• the important thing is

Here, yang turns penting (important) into a noun-like expression. This is a very common Indonesian pattern.

For example:

• yang benar = the correct one / what is correct
• yang baik = the good one / what is good
• yang penting = what matters

No, it is not strictly necessary.

You could say:

• yang penting adalah berani mengakui...
• yang penting berani mengakui...

Both are natural. Using adalah can make the sentence feel a bit more formal, structured, or emphatic, especially in writing.

berani means:

• brave
• daring
• willing to have the courage to

It can be followed directly by a verb:

• berani bertanya = dare to ask
• berani mencoba = dare to try
• berani mengakui = dare to admit / have the courage to admit

So berani does not need another prefix here. It already works as the word that expresses having the courage to do something.

The object is understood from context.

In this sentence, mengakui means something like:

• admit it
• admit being wrong
• admit one’s mistake

Indonesian often leaves out an object if it is already clear. English is more likely to spell it out, but Indonesian can keep it implicit.

They are parallel actions after yang penting adalah.

The sentence is basically saying:

• what matters is admitting
• learning
• and not repeating it

Indonesian often lists verbs or verb phrases in this simple way without repeating the subject each time. The subject is understood throughout.

It can be broken down like this:

• ulang = repeat / again
• mengulangi = to repeat something
• -nya = it

So:

• mengulanginya = to repeat it

In this sentence, -nya refers to the mistake, error, or wrong action mentioned earlier.

Because tidak is used to negate verbs and adjectives, while bukan is mainly used to negate nouns or identify something as not being something else.

Here, mengulanginya is a verb phrase, so:

• tidak mengulanginya = not repeat it

That is the normal choice.

Yes. It is a very natural pattern:

• [noun phrase] + pun + bisa + [adjective/verb]

Examples:

• Anak kecil pun bisa paham. = Even small children can understand.
• Guru pun bisa salah. = Even teachers can be wrong.

So this sentence uses a very common and useful structure for saying that even X can Y.