Final paragraph before signature line, from the Registration & Release and Agreement NRP climbers are required to sign:

I WANT NRP AND EVERYONE CONNECTED WITH NRP TO HAVE EVERY PROTECTION FROM LIABILITY THE LAW WILL ALLOW, AND THEN SOME. I WON’T SUE THEM AND I DON’T WANT ANYONE ELSE SUING THEM. NO MATTER WHAT. I REALLY, REALLY MEAN THIS. REALLY.
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"Things that have never happened before happen all the time." — Scott Sagan, The Limits of Safety