Steven P. McNicoll wrote:

"Larry Dighera" wrote in message

What makes you believe those shows are unscripted?

I believe they're unscripted because there's nothing about them that
suggests there's a script.

Oh, there's a script. It's embarassing for someone to admit that
they are a "writer" on one of those shows, but there's still a script.

Why?

Cost. It's not possible to cost an episode of anything without knowing
exactly how many cameras, lights, sound equipment, wardrobe, makeup,
etc. will be needed. That drives the number of people, which also
drives the quantity of the food...

Actual production - if must be a script in order for the director
to properly place the equipment, set up shots, call the show, etc.
And don't forget the after-recording editing. Placement for commercials,
suspense, etc.