 The paper's conclusions were rejected by Professor Ignacy Jacubowicz, who said the degradation process was not merely a fragmentation, but a change from a high molecular weight polymer to a material that can be bio-assimilated.The evidence for and against oxo-biodegradable plastic was also reviewed in November 2018 by Peter Susman QC, a deputy judge of the high court in England, who had over 25 years experience of adjudicating cases in the technology and construction branch of the high court, involving the evaluation of expert evidence.He declared the scientific case in favour of oxo-biodegradable plastic to be "clear and compelling".