Bort's arteries are all clogged up, so he needs to have one of them bypassed. Bort goes to Dr. Maria to perform the operation. Maria makes Bort sign a liability waiver that states "this operation is a voluntary arrangement between you and I, and as such, you are agreeing to release me from any liability resulting from any actions or conduct that I Dr. Maria take during scope of this operation." Bort signs the liability waiver. Dr. Maria bypasses the wrong artery and Bort has a heart attack the next week. If Bort wants to sue Dr. Maria for medical malpractice, what effect is the liability waiver likely to have on Bort's ability to successfully recover?