is the ground of all being." The film was also discussed in a letter published in Physics Today that challenges how physics is taught, saying teaching fails to "expose the mysteries physics has encountered [and] reveal the limits of our understanding". In the letter, the authors write: "the movie illustrates the uncertainty principle with a bouncing basketball being in several places at once. There's nothing wrong with that. It's recognized as pedagogical exaggeration. But the movie gradually moves to quantum 'insights' that lead a woman to toss away her antidepressant medication, to the quantum channeling of Ramtha, the 35,000-year-old Lemurian warrior, and on to even greater nonsense." It went on to say that "Most laypeople cannot tell where the quantum physics ends and the quantum nonsense begins, and many are susceptible to being misguided," and that "a physics student may be unable to convincingly confront unjustified extrapolations of quantum mechanics," a shortcoming which the authors attribute to the current teaching of quantum mechanics, in which "we tacitly deny the mysteries physics has encountered". Richard Dawkins stated that "the authors seem undecided whether their theme is quantum theory or consciousness. Both are indeed mysterious, and their genuine mystery needs none of the hype with which this film relentlessly and noisily belabours us", concluding that the film is "tosh". Professor Clive Greated wrote that "thinking on neurology and addiction are covered in some detail but, unfortunately, early references in the film to quantum physics are not followed through, leading to a confused message". Despite his caveats, he recommends that people see the film, stating: "I hope it develops into a cult movie in the UK as it has in the US. Science and engineering are important for our future, and anything that engages the public can only be a good thing." Simon Singh called it pseudoscience and said the suggestion "that if observing water changes its molecular structure, and if we are 90% water, then by observing ourselves we can change at a fundamental level via the laws of quantum physics" was "ridiculous balderdash". According to João Magueijo, professor in theoretical physics at Imperial College, the film deliberately misquotes science. The American Chemical Society's review criticizes the film as a "pseudoscientific docudrama", saying "Among the more outlandish assertions are that people can travel backward in time, and that matter is actually thought." Bernie Hobbs, a science writer with ABC Science Online, explains