51That appraisal of the evidence is consistent with well-established case-law. As the Court has already held in other cases, it is normal for the activities which anticompetitive practices and agreements entail to take place in a clandestine fashion, for meetings to be held in secret, and for the associated documentation to be reduced to a minimum. It follows that, even if the Commission discovers evidence explicitly showing unlawful contact between traders, it will normally be only fragmentary and sparse, so that it is often necessary to reconstitute certain details by deduction. Accordingly, in most cases, the existence of an anti-competitive practice or agreement must be inferred from a number of coincidences and indicia which, taken together, may, in the absence of another plausible explanation, constitute evidence of an infringement of the competition rules (Aalborg Portland and Others v Commission, paragraphs 55 to 57).
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