IN: Hilary Whitehall Putnam (; July 31, 1926 - March 13, 2016) was an American philosopher, mathematician, and computer scientist, and a major figure in analytic philosophy in the second half of the 20th century. He made significant contributions to philosophy of mind, philosophy of language, philosophy of mathematics, and philosophy of science. At the time of his death, Putnam was Cogan University Professor Emeritus at Harvard University. He was known for his willingness to apply an equal degree of scrutiny to his own philosophical positions as to those of others, subjecting each position to rigorous analysis until he exposed its flaws.

In the field of epistemology, Putnam is known for his "brain in a vat" thought experiment (a modernized version of Descartes's evil demon hypothesis). The argument is that one cannot coherently state that one is a disembodied "brain in a vat" placed there by some "mad scientist". This follows from the causal theory of reference. Words always refer to the kinds of things they were coined to refer to, thus the kinds of things their user, or the user's ancestors, experienced. So, if some person, Mary, were a "brain in a vat", whose every experience is received through wiring and other gadgetry created by the "mad scientist", then Mary's idea of a "brain" would not refer to a "real" brain, since she and her linguistic community have never seen such a thing. Rather, she saw something that looked like a brain, but was actually an image fed to her through the wiring. Similarly, her idea of a "vat" would not refer to a "real" vat. So, if, as a brain in a vat, she were to say "I'm a brain in a vat", she would actually be saying "I'm a brain-image in a vat-image", which is incoherent. On the other hand, if she is not a brain in a vat, then saying that she is a brain in a vat is still incoherent, but now because she actually means the opposite. This is a form of epistemological externalism: knowledge or justification depends on factors outside the mind and is not solely determined internally. Putnam has clarified that his real target in this argument was never skepticism, but metaphysical realism. Since realism of this kind assumes the existence of a gap between how man conceives the world and the way the world really is, skeptical scenarios such as this one (or Descartes' evil demon) present a formidable challenge. Putnam, by arguing that such a scenario is impossible, attempts to show that this notion of a gap between man's concept of the world and the way it is, is in itself absurd. Man cannot have a "God's eye" view of reality. He is limited to his conceptual schemes. Metaphysical realism is therefore false, according to Putnam.
QUESTION: What else was notable about epistemology?
IN: Edward Albert Heimberger was born in Rock Island, Illinois, on April 22, 1906, the oldest of the five children of Frank Daniel Heimberger, a realtor, and his wife, Julia Jones. His year of birth is often given as 1908, but this is incorrect. His parents were not married when Albert was born, and his mother altered his birth certificate after her marriage. When he was one year old, his family moved to Minneapolis, Minnesota.

In 1971, Albert guest-starred in a season-one Columbo episode called "Dead Weight", which also featured guest star Suzanne Pleshette, as a highly-decorated retired US Marine Corps major general, and combat war hero from the Korean War, who murders his adjutant to cover up an illegal quid pro quo contracting conspiracy scheme. In 1972, Albert resumed his film career and was nominated for an Oscar for Best Supporting Actor for his performance as an overprotective father in The Heartbreak Kid (1972), and delivered a memorable performance as an evil prison warden in 1974's The Longest Yard. In a lighter vein, Albert portrayed the gruff though soft-hearted Jason O'Day in the successful Disney film Escape to Witch Mountain in 1975. Albert appeared in such 1980s films as How to Beat the High Co$t of Living (1980), Yesterday (1981), Take This Job and Shove It (1981), Rooster (1982 television film), and Yes, Giorgio (1982), and as the US President in Dreamscape (1984). His final feature film role was a cameo appearance in The Big Picture (1989). He also appeared in many all-star television miniseries, including Evening in Byzantium (1978), The Word (1978), Peter and Paul (1981), Goliath Awaits (1981) and War and Remembrance (1988). In the mid-1980s, Albert was reunited with longtime friend and co-star of the Brother Rat and An Angel from Texas films, Jane Wyman, in a recurring role as the villainous Carlton Travis in the popular 1980s soap opera Falcon Crest. He also guest-starred on an episode of the '80s television series Highway to Heaven, as well as Murder, She Wrote, and in 1990, he reunited with Eva Gabor for a Return to Green Acres. In 1993, he guest-starred for several episodes on the ABC daytime soap opera General Hospital as Jack Boland, and also made a guest appearance on the Golden Girls spin-off The Golden Palace the same year.
QUESTION:
Did he star in any movies?