Karl Popper was a philosopher who is best known for his ideas about the nature of scientific knowledge. He was born in Austria in 1902, but grew up in Vienna and studied at the University of Vienna, where he became interested in the work of Sigmund Freud and Ludwig Wittgenstein.
Popper’s views on science have had a big impact on how we think about our world today. He believed that science progresses by making tests or predictions that can be falsified (shown to be false). He also believed that all scientific theories are ultimately only provisional, never certain and capable of being disproved by their own evidence. A theory is not true until it has been successfully tested many times, which means that it will eventually be replaced by another theory when it fails a test or prediction.
Philosopher believed that science should be free from any kind of dogmatic authority or political influence and must always remain open to criticism and revision if new evidence emerges that contradicts accepted theories or overturns established beliefs about how things work. This approach has led him to be regarded as one of the founders of modern critical rationalism, which attempts to explain how rational thought works by testing ideas against each other based on their logical consistency rather than their empirical content (what can actually be proved).
