Mathematical Physicist Ikjyot Singh Kohli first published an article on the blog defending the physics used in the film. In particular, he provided calculations in which he showed that the time dilation effect caused by the spinning black hole in the movie was indeed accurate. The article was written shortly after the film's release in response to a number of scientific blogs that criticized the film's physics for not being accurate, which were shown by Kohli to be due to several misunderstandings by the authors of the blogs in question.