Why Creative People Need Doors

I estimate
that whenever I have to break from writing,
it takes me at least
one half hour to find my groove again.

One half hour
every time someone asks me a question
or the phone rings
or I receive a request
I can do ‘later.’

Most creative people
(artists, marketers, product developers)
have the same recovery time.
It is painful,
especially when we’re trying to be creative
on tight turnaround times.

What I do is shut my door,
unplug my phone,
and disappear from the world.

Do you allow your creative people to do this?
Do your creative people,
regardless of titles,
have, at the minimum,
offices with doors on them?