It is not enough for the scientist to go through the usual stages (research, hypothesis, falsification, experiment, repetition, peer review, etc.); Bourdieu recommends also that the scientist purge their work of the prejudices likely to derive from their social position. In a good illustration of the process, Bourdieu chastises academics (including himself) for judging their students' work against a rigidly scholastic linguistic register, favouring students whose writing appears 'polished', marking down those guilty of 'vulgarity'. Without a reflexive analysis of the snobbery being deployed under the cover of those subjective terms, the academic will unconsciously reproduce a degree of class prejudice, promoting the student with high linguistic capital and holding back the student who lacks it—not because of the objective quality of the work but simply because of the register in which it is written. Reflexivity should enable the academic to be conscious of their prejudices, e.g. for apparently sophisticated writing, and impel them to take steps to correct for this bias. Bourdieu also describes how the "scholastic point of view" unconsciously alters how scientists approach their objects of study. Because of the systematicity of their training and their mode of analysis, they tend to exaggerate the systematicity of the things they study. This inclines them to see agents following clear rules where in fact they use less determinate strategies; it makes it hard to theorise the 'fuzzy' logic of the social world, its practical and therefore mutable nature, poorly described by words like 'system', 'structure' and 'logic' which imply mechanisms, rigidity and omnipresence. The scholar can too easily find themselves mistaking "the things of logic for the logic of things"—a phrase of Marx's which Bourdieu is fond of quoting. Again, reflexivity is recommended as the key to discovering and correcting for such errors which would otherwise remain unseen, mistakes produced by an over-application of the virtues that produced also the truths within which the errors are embedded. Theory of capital and class distinction Bourdieu introduced the notion of capital, defined as sums of particular assets put to productive use. For Bourdieu, such assets could take various forms, habitually referring to several principal forms of capital: economic, symbolic, cultural and social. Loïc Wacquant would go on to describe Bourdieu's thought further: Capital comes in 3 principal species: economic, cultural and social. A fourth species, symbolic capital, designates the effects of any form of capital when people do not perceive them