of spiritual investigation, no intersubjective validation is possible by conventional scientific methods; it thus cannot stand up to empiricist critics. Peter Schneider describes such objections as untenable, asserting that if a non-sensory, non-physical realm exists, then according to Steiner the experiences of pure thinking possible within the normal realm of consciousness would already be experiences of that, and it would be impossible to exclude the possibility of empirically grounded experiences of other supersensory content. Olav Hammer suggests that anthroposophy carries scientism "to lengths unparalleled in any other Esoteric position" due to its dependence upon claims of clairvoyant experience, its subsuming natural science under "spiritual science." Hammer also asserts that the development of what she calls "fringe" sciences such as anthroposophic medicine and biodynamic agriculture are justified partly on the basis of the ethical and ecological values they promote, rather than purely on a scientific basis. Though Steiner saw that spiritual vision itself is difficult for others to achieve, he recommended open-mindedly exploring and rationally testing the results of such research; he also urged others to follow a spiritual training that would allow them directly to apply his methods to achieve comparable results. Anthony Storr stated about Rudolf Steiner's Anthroposophy: "His belief system is so eccentric, so unsupported by evidence, so manifestly bizarre, that rational skeptics are bound to consider it delusional... But, whereas Einstein's way of perceiving the world by thought became confirmed by experiment and mathematical proof, Steiner's remained intensely subjective and insusceptible of objective confirmation." According to Dan Dugan, Steiner was a champion of the following pseudoscientific claims, also championed by Waldorf schools: wrong color theory; obtuse criticism of the theory of relativity; weird ideas about motions of the planets; supporting vitalism; doubting germ theory; weird approach to physiological systems; "the heart is not a pump". Religious nature As an explicitly spiritual movement, anthroposophy has sometimes been called a religious philosophy. In 1998 People for Legal and Non-Sectarian Schools (PLANS) started a lawsuit alleging that anthroposophy is a religion for Establishment Clause purposes and therefore several California school districts should not be chartering Waldorf schools; the lawsuit was dismissed in 2012 for failure to show anthroposophy was a religion. In 2000, a French court ruled that a government minister's description of anthroposophy as a cult was defamatory. The teachings of Anthroposophy are essentially Christian Gnosticism. Statements on race Some anthroposophical ideas challenged the National Socialist racialist and nationalistic