Ad hoc is a Latin phrase meaning "for this". It generally signifies a solution designed for a specific problem or task, non-generalizable, and not intended to be able to be adapted to other purposes. Compare A priori. Common examples are organizations, committees, and commissions created at the national or international level for a specific task. In other fields the term may refer, for example, to a military unit created under special circumstances, a tailor-made suit, a handcrafted network protocol, or a purpose-specific equation. Ad hoc can also mean makeshift solutions, shifting contexts to create new meanings, inadequate planning, or improvised events.

In science and philosophy, ad hoc means the addition of extraneous hypotheses to a theory to save it from being falsified. Ad hoc hypotheses compensate for anomalies not anticipated by the theory in its unmodified form. Scientists are often skeptical of theories that rely on frequent, unsupported adjustments to sustain them. Ad hoc hypotheses are often characteristic of pseudoscientific subjects. Much of Ad hoc hypotheses are not necessarily incorrect, however. An interesting example of an apparently supported ad hoc hypothesis was Albert Einstein's addition of the cosmological constant to general relativity in order to allow a static universe. Although he later referred to it as his "greatest blunder," it has been found to correspond quite well to the theories of dark energy.

Maciej Stuhr (born 23 June 1975) is a Polish actor, comedian and impressionist, also a psychologist. He established the cabaret Po Żarcie.

He is the son of Jerzy Stuhr.

Best known for role Kuba Brenner in Chłopaki nie płaczą and Piotr in Krzysztof Kieslowski's Decalogue X.

Thomas Keller (born October 14, 1955) is an American chef, restaurateur, and cookbook writer. He and his landmark Napa Valley restaurant, The French Laundry in Yountville, California, have won multiple awards from the James Beard Foundation, notably the Best California Chef in 1996, and the Best Chef in America in 1997. The restaurant is a perennial winner in the annual Restaurant Magazine list of the Top 50 Restaurants of the World.

In 2005, he was awarded the three star rating in the inaugural Michelin Guide for New York for his restaurant Per Se, and in 2006, he was awarded three stars in the inaugural Michelin Guide to the Bay Area for The French Laundry. He is the only American chef to have been awarded simultaneous three star Michelin ratings for two different restaurants.

Born at Camp Pendleton in Oceanside, California to Edward, a Marine drill instructor, and Betty Keller, a restaurateur, Thomas was the youngest of five boys. Four years after his parents divorced, the family moved east and settled in Palm Beach, Florida. In his teenage summers, he worked at the Palm Beach Yacht Club starting as a dishwasher and quickly moving up to cook. It was here he discovered his passion for cooking and perfection in a hollandaise sauce.