Gilbert Harman is a prominent philosopher known for his work in the fields of philosophy of mind, moral philosophy, and epistemology. He is particularly recognized for his research on the nature of moral judgments, the relationship between moral and non-moral reasoning, and the concepts of truth and reasoning in ethics. Harman has also made contributions to discussions about the nature of meaning and language. Throughout his career, he has published numerous articles and books, influencing both philosophical theory and applied ethics.

Cross-conjugation is a concept primarily used in the field of chemistry, particularly in the study of molecular orbital theory and conjugated systems. It generally refers to a type of conjugation where double bonds or other forms of pi-bonding are separated by a single bond, allowing for the delocalization of electrons across non-adjacent pi bonds. In cross-conjugated systems, the alignment and overlap of p orbitals contribute to the stabilization of the molecule due to resonance.

Cultural depictions of astronomers can be found across various forms of art, literature, film, and popular culture, and they often reflect societal attitudes towards science, exploration, and knowledge. Here are some key aspects of how astronomers are portrayed in different cultural contexts: 1. **Historical Figures**: Many astronomers from history, such as Copernicus, Galileo, Kepler, and Newton, are often romanticized as visionary thinkers who challenged established norms.

J. Robert Oppenheimer, often referred to as the "father of the atomic bomb," has been the subject of various cultural depictions across literature, film, television, and theater. These portrayals often explore his role in the Manhattan Project, his complex personality, moral dilemmas, and the broader implications of nuclear weapons. Here are some notable examples: 1. **Literature**: Oppenheimer has been featured in several biographies and works of historical fiction.

As of my last update in October 2021, Daniel I. A. Cohen could refer to a number of different individuals, but there doesn't seem to be a widely recognized figure by that name. It's possible that he may be an academic, researcher, professional, or someone notable in a niche field. If you have a specific context or area in which you're referring to Daniel I. A. Cohen (such as literature, science, business, etc.

G. Mike Reed is a name that may refer to different individuals, but without specific context, it is difficult to determine which person you are asking about. For instance, G. Mike Reed could refer to an academic, a business professional, a public figure, or someone in a different field.