95With regard to the judicial review of whether that principle has been observed, in an area of evolving and complex technology, the EU legislature has a broad discretion, in particular as to the assessment of highly complex scientific and technical facts in order to determine the nature and scope of the measures that it adopts, whereas review by the EU judicature has to be limited to verifying whether the exercise of such powers has been vitiated by a manifest error of appraisal or a misuse of powers, or whether the legislature has manifestly exceeded the limits of its discretion. In such a context, the EU judicature cannot substitute its assessment of scientific and technical facts for that of the EU legislature on which the Treaty has conferred that task (judgment of 21 June 2018, Poland v Parliament and Council, C‑5/16, EU:C:2018:483, paragraph 150).
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