You may have noticed something strange if you read modern books closely:

Writers often drop the comma before “and” when joining two complete sentences.

I walked into the room and I sat down.

No comma.
No pause.
No problem—at least in that world.

But if you bring that same habit into a legal transcript, you’re no longer making a stylistic choice.

You’re removing structure from a record that depends on it.

The Rule (That Didn’t Go Away)

In formal English, the rule is simple:

When two independent clauses are joined by a coordinating conjunction—and, but, or, so, yet, for, nor—you use a comma.

I walked into the room, and I sat down.

Each side can stand alone.
The comma marks that boundary.

More Examples (Where the Comma Carries Weight)

Look at how these read without the comma:

He finished the deposition and he called the attorney.
She reviewed the exhibit and she corrected the caption.
The witness hesitated and he changed his answer.
I don’t recall that conversation but I might have seen the email.

Now with the comma:

He finished the deposition, and he called the attorney.
She reviewed the exhibit, and she corrected the caption.
The witness hesitated, and he changed his answer.
I don’t recall that conversation, but I might have seen the email.

Nothing dramatic changed.

But everything became easier to process.

The separation is visible.
The structure is stable.
The reader doesn’t have to do the work.

Where It Really Matters (Testimony Under Pressure)

Consider this:

I told him to stop and I left.

Versus:

I told him to stop, and I left.

Or:

He said he didn’t see anything but he was looking at his phone.

Versus:

He said he didn’t see anything, but he was looking at his phone.

In a book, the reader glides past that.

In a transcript, someone may be:

• scanning for contradictions

• isolating admissions

• reading at speed

The comma helps them see the shift instantly.

Why Books Can Get Away With It

In literary writing, the goal is rhythm and voice.

Writers may drop the comma to:

• speed up the line

• mimic natural speech

• reduce visual clutter

If the meaning is clear, the reader fills in the structure.

Why Transcripts Cannot

A transcript is not written for style.

It is written for:

• accuracy

• clarity

• durability under scrutiny

The reader should never have to “fill in” structure.

It should already be there.

This Is the Cleanest Way to See It

Think of the comma like a lane divider on a highway.

In a quiet neighborhood street, you can get away without clear lines.
Drivers adjust. The stakes are low.

That’s literary writing.

But on a high-speed highway?

You need clear lane markings.

Not because drivers are bad—
but because:

• speeds are higher

• decisions are faster

• mistakes cost more

That’s a legal transcript.

The comma is the line that keeps thoughts from drifting into each other.

Structure Over Style

Literary writing asks:

Does this sound right?

Transcript work asks:

Can this be misunderstood—or slow someone down?

Different question.
Different standard.

The Bottom Line

Yes—some authors omit the comma.

They’re allowed to.

They’re writing for flow.

You’re writing for clarity under pressure.

So in transcripts:

Use the comma. Every time.

Not because it’s stricter.

Because it’s clearer.

And clarity is the whole job.