Question: Are Jack Finney and Tim O'Brien both considered writers?

Context paragraphs:
Such Interesting Neighbors: Such Interesting Neighbors is a science fiction short story by American writer Jack Finney, first published in 1951.  Adapted versions of the story for television aired as episodes of "Science Fiction Theatre" and "Amazing Stories".

Invasion of the Body Snatchers (1978 film): Invasion of the Body Snatchers is a 1978 American science fiction horror film directed by Philip Kaufman, and starring Donald Sutherland, Brooke Adams, Veronica Cartwright, Jeff Goldblum and Leonard Nimoy.  Released on December 22, 1978, it is a remake of "Invasion of the Body Snatchers" (1956), which is based on the novel "The Body Snatchers" by Jack Finney.  The plot involves a San Francisco health inspector and his colleague who discover that humans are being replaced by alien duplicates; each is a perfect copy of the person replaced, only devoid of human emotion.

Assault on a Queen: Assault on a Queen is a 1966 American action-adventure film, directed by Jack Donohue, starring Frank Sinatra and Italian beauty Virna Lisi.  Based on a 1959 novel by Jack Finney, it was adapted for the screen by Rod Serling and released by Paramount Pictures on June 15, 1966.

House of Numbers (1957 film): House of Numbers is a 1957 classic American film noir, based on author Jack Finney's 1957 novel of the same name, starring Jack Palance and Barbara Lang.

Body Snatchers (1993 film): Body Snatchers is a 1993 American science fiction horror film directed by Abel Ferrara and starring Gabrielle Anwar, Billy Wirth, Terry Kinney, Meg Tilly, Christine Elise, R. Lee Ermey and Forest Whitaker.  It is loosely based on the 1955 novel "The Body Snatchers" by Jack Finney.

The Body Snatchers: The Body Snatchers is a 1955 science fiction novel by American writer Jack Finney, originally serialized in "Colliers Magazine" in 1954, which describes real-life Mill Valley, California, being invaded by seeds that have drifted to Earth from space.  The seeds replace sleeping people with perfect physical duplicates grown from plantlike pods, while their human victims turn to dust.

Tim O'Brien (author): William Timothy "Tim" O'Brien (born October 1, 1946) is an American novelist.  He best known for his "The Things They Carried" (1990), a collection of linked short stories.  These semi-autobiographical stories were inspired by O'Brien's experiences in the Vietnam War.  In 2010 the "New York Times" described O'Brien's book as a Vietnam classic.  In addition, he is known for his war novel, "Going After Cacciato" (1978), also about wartime Vietnam, and later novels about postwar lives of veterans.

Jack Finney: Jack Finney (October 2, 1911 – November 14, 1995) was an American author.  His best-known works are science fiction and thrillers, including "The Body Snatchers" and "Time and Again".  The former was the basis for the 1956 movie "Invasion of the Body Snatchers" and its remakes.

Maxie (film): Maxie is a 1985 American fantasy film directed by Paul Aaron and starring Glenn Close, Mandy Patinkin, Valerie Curtin, Ruth Gordon and Barnard Hughes.  The plot is based on the 1973 novel "Marion's Wall" by Jack Finney about a woman who is possessed by a very outgoing female ghost - a budding actress from the 1920s - named Maxie, who wants to fulfill her destiny.

5 Against the House: 5 Against the House is a 1955 American heist film noir based on a story by Jack Finney, starring Guy Madison, Brian Keith, and Kim Novak, in one of her first film appearances.  It was directed by Phil Karlson.  The movie centers on a fictional robbery of what was a real Nevada casino, Harold's Club.  The supporting cast includes William Conrad.  The screenplay was based on Jack Finney's 1954 novel of the same name, which was later serialized by "Good Housekeeping" magazine.

Supporting paragraphs: Jack Finney Tim O'Brien (author)
Answer: yes