Why should we believe what science tells us about the world? Observation data, confirmation of theories, and the explanation of phenomena are all considered in an introductory survey of the philosophy of science.
So, how many times did the world turn fully around, really? ... We can ask if one of these reference frames is in some way distinguished as being the one that's right, while all the others are distortions of the truth.
The concept of gravity provides a natural phenomenon that is simultaneously obvious and obscure; we all know what it is, but rarely question why it is.
In this book, however, this categorization is resisted and observability is analyzed in a descriptive way in terms of the information which one can receive through interaction with objects in the world.
The book demonstrates that there are several important requirements for being scientific, and the most fundamental of these is maintaining an extensive, interconnected, coherent network of ideas.