Question

what does philosophy have to do with the real world?

Answer 1

Philosophy has lots of real-world applications such as the mental concepts necessary for inventing the object-oriented programming were fleshed out by ancient Greek philosophers. The math-philosopher Leibniz invents the binary number system after being inspired by the Chinese philosophers. Enlightenment philosophers guided scientists how to do their job. The "scientific method" was taught to budding scientists by them. Thus the philosophical ideas lead to the development of Scientific innovations.