31The applicant submits that the internal documents seized at the premises of ICI, on which the Commission based its entire case, have no evidentiary force in its regard. The alleged notes of meetings of polypropylene producers are handwritten documents which are hard to decipher and are the personal notes of an unknown author. Those documents cannot be treated as objective minutes of meetings reflecting the actual positions taken by participants. The Commission's assumption that the documents provided an accurate record of the meetings places the producers in the impossible position of having to prove a negative, that is to say to show that certain statements were not made and certain agreements were not entered into.