I'm teaching Philosophy of Science this semester. It's a fun class. I just had occasion to discuss the philosophy of Sir Karl Popper, who was among the most influential philosophers of science of the last century (and therefore of all time). He had an enormous influence on our intellectual culture, especially on scientists, and he is the reason why you hear complaints about "unfalsifiability" from time to time (accusations that religion is "unfalsifiable", etc.).
Someone criticized this post at https://conjecturesandrefutations.com/2021/03/24/michael-huemer-on-popper/.