Duane Tolbert Gish (February 17, 1921 – March 5, 2013[1]) was an American biochemist and a prominent member of the creationist movement.

[6] A Methodist from age ten, and later a fundamentalist Baptist, Gish believed that the Genesis creation narrative was historical fact.

[8] He joined the American Scientific Affiliation (ASA), an association of Christian scientists, mistakenly assuming the group supported creationism.

Eugenie Scott, executive director of the National Center for Science Education, dubbed this approach the "Gish gallop", describing it as "where the creationist is allowed to run on for 45 minutes or an hour, spewing forth torrents of error that the evolutionist hasn't a prayer of refuting in the format of a debate".

Gish accused Miller of using spread debating, i.e. speaking very fast and bringing up so many points that there was no chance to answer them all.