A expositor who truly understood the subject and that was able to provide information that one could reasonable trust.
No. The fact that this individual demonstrated ignorance of the theory of special relativity does not obviate the fact that many philosophers of science have professional level competence in both science and philosophy.
The presenter in this case is also the author. As a presenter he was quite adequate, the problem being with the material itself.
In many ways the philosophical reasoning was both interesting and informative. The problem was that the author made completely erronious statements about the theory of special relativity. Thus he stated that the theory only deals with constant velocity motion. In fact the difference between special and general relativity is that the general theory includes gravity. As a look into any basic physics text that discusses the special theory shows the special theory deals quite well with accelerated motion. For example the description of the famous twin paradox involves the traveling twin to turn around and return to the location of the stay at home twin. Since this certainly involves acceleration the explanation using special relativity is certainly dealing with accelerated motion. The author's unequivocal incorrect statements about this indicated to me that I could not trust his statements about subjects of which I'm ignorant and pretty much ruined the presentation for me. A philosopher of science should at least have someone knowledgable in any field he discusses look over his work.
The teaching company in claiming to choose presenters with academic excellence should certainly have their courses reviewed by knowledgable individuals. In this case they failed!
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