Abstract
Following the well known inverted spectrum argument by John Locke we examine the necessity of the first person experience in creating scientific knowledge, in particular, in physics. It is found that Locke’s argument is irrelevant for creating objective knowledge as the necessary things we need to do physics are: ability to perform measurements in terms of comparing certain quantities, ability to create theoretical ideas (in dependence inter alia on cultural principles, changing in the course of history), and the brain structure enabling the former two.