election is final and bars any action, suit, or proceeding inconsistent with the elected remedy, in the ab-sence of fraud by the other party. The choice of a party between inconsistent remedies results in awaiver by election. Waiver is the intentional relinquishment of a known right. It is an act of understanding that presup-poses that a party has knowledge of its rights, but chooses not to assert them. It must be generallyshown by the party claiming a waiver that the person against whom the waiver is asserted had at thetime actual or constructive knowledge of the existence of the party’s rights or of all material facts uponwhich they depended. Where one lacks knowledge of a right, there is no basis upon which waiver of itcan rest. Ignorance of a material fact negates waiver, and waiver cannot be established by a consentgiven under a mistake or misapprehension of fact.As a general rule a claimant has a choice of either to recover from the employer the fixed amounts setby the Workmen’s Compensation Act or to prosecute an ordinary civil action against the tort fees or for
higher damages but he cannot pursue both courses of action simultaneously. An exception to said rule