You cannot, uniformly, give people the ability to do anything to you. That's the point I'm making. > What about boxing, martial arts sparring, fencing Consent

You cannot, uniformly, give people the ability to do anything to you. That's the point I'm making. > What about boxing, martial arts sparring, fencing Consent only works up to a point. I cannot consent to you stabbing me or beating me into a bloody pulp. https://en.wikipedia.org/wiki/Consent_(criminal_law) https://en.wikipedia.org/wiki/Consent_(criminal_law) https://en.wikipedia.org/wiki/R_v_Brown https://en.wikipedia.org/wiki/R_v_Brown It's worth noting that bare knuckle boxing is illegal in the UK, and you can't just sign a document to do it. > assisted suicide Assisted suicide is illegal in the UK. It does not matter if the patient signs a contract to say it's OK, it's still illegal.