The scene that runs before a title sequence has been a television fixture for decades, but the job it performs has changed completely. Its target used to be a passing viewer and is now a decision.
It began as a defence against the remote
In a broadcast schedule, a programme's first moments competed with every other channel. A viewer arriving at the top of the hour would sample several before settling.
Starting with a title sequence handed that viewer ninety seconds of graphics and music with nothing happening in the story.
Opening with a scene instead gave them something to be caught by. The titles then ran once the audience was already invested, which turned a branding sequence into a reward rather than a toll.
The same logic reappeared with different numbers
Streaming has no channel-surfing, but it has a viewer holding a remote at a home screen with hundreds of alternatives one click away.
The competition is no longer other channels; it is the interface itself, which is engineered to make leaving easy.
The cold open survives because that pressure survived, even though the specific behaviour it was designed against has gone. The device outlasted its original enemy by finding an equivalent one waiting in a different place.
Skip buttons changed what the scene must do
Most services now let a viewer skip the titles, and many people do so every time. The title sequence has become genuinely optional.
That means the cold open often runs directly into the first act, with only a pressed button between them.
Writers have adjusted by making the opening scene connect forward rather than sitting apart, since the pause it was written against may never occur.
It carries the recap function now
With previously-on segments increasingly cut, the opening scene is where a viewer re-establishes where they are in a serialised story.
A well-built cold open re-orients without explaining, using a location, a character or an unresolved object to restore context.
This is a harder piece of writing than either the old hook or the old recap, and it is being asked of the same ninety seconds.
Comedy uses it differently
In comedy the pre-title scene has become a self-contained joke, disconnected from the episode's plot and often the strongest material in it.
That detachment is useful because the segment travels well as a clip, which is now part of how comedies are promoted.
The scene is therefore written twice over: once to open the episode and once to work alone on a feed. Writers are aware of the second use while drafting, which is a genuinely new pressure on a very old device.