Article 12 caps and procedural rules: the injured person bears the burden under Article 11 but the procedural rules in Articles 9 + 11 reduce the practical burden through disclosure + presumptions; reduces the bar to bringing claims for highly technical / opaque products. Article 13 sets out reduction of liability: liability may be reduced + extinguished if the damage is caused by both a defect AND the fault of the injured person or any person for whom the injured person is responsible. Article 14 multiple-defendant joint + several liability: where more than one economic operator is liable for the same damage, they shall be jointly + severally liable - the injured person may claim the full damage from any one of them; the choice of defendant is the claimant's; recourse among defendants is governed by Article 18 (national contribution rules).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.