Yes, Arnold Gehlen had two children, a son named Rolf Gehlen and a daughter named Renate Gehlen. Rolf Gehlen followed in his father's footsteps and became a sociologist, while Renate Gehlen pursued a career in education. Arnold Gehlen's children have contributed to the fields of sociology and education, carrying on their father's legacy in their own ways. **

Arnold Gehlen's ideas and theories continue to be studied and discussed in the fields of sociology, anthropology, and philosophy. While Gehlen himself is not returning to culture, his work remains influential and relevant in contemporary discussions about human nature, technology, and society. Scholars and thinkers continue to engage with Gehlen's concepts, adapting and building upon them in the context of current social and technological developments. Therefore, in a sense, Gehlen's ideas are returning to culture through ongoing academic and intellectual engagement. **

Arnold Gehlen was a German philosopher and sociologist known for his work on philosophical anthropology. He focused on the nature of human beings and their place in the world, exploring concepts such as technology, culture, and the human condition. Gehlen's analysis emphasized the idea that humans are incomplete beings who rely on culture and technology to compensate for their biological deficiencies. He also discussed the impact of modernity on human existence, highlighting the challenges and opportunities it presents. Overall, Gehlen's philosophical analysis offers a thought-provoking perspective on the essence of humanity and its relationship with the world. **

Sartre, Gehlen, and Bieri are all influential philosophers, but they have distinct perspectives and areas of focus. Sartre, a key figure in existentialism, emphasized individual freedom and responsibility, arguing that humans create their own essence through their choices. Gehlen, a sociologist and philosopher, focused on the concept of institutions and how they shape human behavior and culture. Bieri, a Swiss philosopher and author, explores themes related to personal identity, consciousness, and the nature of self. Each thinker offers unique insights into the human condition and the complexities of existence. **

Gehlen came to his concept of human nature through a combination of philosophical and biological influences. He was influenced by the existentialist philosophy of thinkers like Martin Heidegger and Friedrich Nietzsche, which emphasized the idea of human beings as fundamentally incomplete and in need of self-creation. Additionally, Gehlen drew on biological theories of evolution and adaptation, particularly the work of Konrad Lorenz, to develop his understanding of human nature as shaped by the need to adapt to the environment. This combination of philosophical and biological perspectives led Gehlen to conceptualize human nature as characterized by a fundamental lack and the need for cultural and social institutions to compensate for this lack. **

Arnold Gehlen understands culture as the sum of all human activities and achievements that are not directly tied to biological needs. He sees culture as the realm of freedom and creativity that allows humans to transcend their natural instincts. Institutions, on the other hand, are the structures and systems within a society that regulate and organize human behavior. Gehlen views institutions as necessary for maintaining order and stability in society, providing a framework within which culture can flourish. **

A prime lens with a focal length between 35mm and 50mm is typically considered suitable for street photography. These lenses offer a natural field of view that closely resembles what the human eye sees, making them great for capturing candid moments in urban environments. Additionally, prime lenses are often compact and lightweight, which is ideal for street photographers who need to move quickly and discreetly. Overall, a 35mm or 50mm prime lens is a popular choice among street photographers for its versatility and ability to capture authentic moments. **

A macro lens is typically the best choice for product photography. Macro lenses are designed to capture small subjects with great detail and clarity, making them ideal for capturing the intricate details of products. They also have a close focusing distance, allowing you to get up close to the product for detailed shots. Additionally, a lens with a focal length between 50mm and 100mm is recommended for product photography as it provides a natural perspective and minimizes distortion. **