The philosophy of science is a field philosophy and it traditionally studies three families of problems.

1. General problems of science

a. Epistemological problems of science
(i.e. What is the criteria of scientific approach? Is only one type of ‘scientificness’ possible? Can there be any other foundation of a scientific theory than the sensual experience? How reliable is induction? Can a probability of a state of facts (an eventuality) really be measured, or only a probability of a logical possibility (a necessity) can be calculated? What is verification and to what extent can it verify?)

b. Metaphysical problems of science
(i. e. Does scientific theory reveal reality? What is ‘objectivity’? How do contexts exist? What is ‘explanation’ after all? Do the conceived beings really exist /i.e. subatomic particles, ego, financial market, freedom/?)

c. Ethical  problems of science
(i.e. Where are the limits of a scientist’s responsibility regarding dangerous research and dangerous applications? Is the limitation and prohibition of research in certain questions allowable or compulsory /i.e. religious miracles, racial differences, alive autopsy/?)

2. Problems of the connections between scientific fields

(i.e. Is a unified scientific theory and science that connect every scientific field possible? Is there an essential difference between natural and social sciences? Can sciences ultimately be reduced to one fundamental science? What makes a scientific field autonomous and what makes an interdisciplinary science autonomous?)

3. Problems of scientific key concepts

(I.e. What is ‘time’, ‘space’, ‘energy’, ‘matter’, ‘cause’, ‘reason’?)