If we ignore such difficulties, others emerge concerned with the
persuasive communication of our resultant insights to others. These
insights can be tested and confirmed only by persons well-trained in the
ability to engage in pure description in the unnatural attitude of
reflection, trained in short to allow phenomenological relations to work
upon them /in full purity. /Such purity means that we must keep out the
falsifying intrusion of all assertions based on the naïve acceptance and
assessment of objects, whose existence has been posited in the acts now
receiving phenomenological treatment. It likewise prohibits any other
going beyond whatever is essential and proper to such acts, any
application to them of naturalistic interpretations and assertions. It
forbids us, i.e., to set them up as psychological realities (even in an
indefinitely general or exemplary fashion), as the states of
‘mind-endowed beings’ of any sort whatsoever. The capacity for such
researches is not readily come by, nor can it be achieved or replaced
by, e.g., the most elaborate of trainings in experimental psychology.
Edmund Husserl, Logical Investigations vol. 1, p. 171
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