There are aspects of how our minds work that are essential for the proper functioning of a rights-based society. The exercise of some kind of modification of the brain that undermines the ability to make a rights-based society work can not itself be an unlimited right. The biggest challenge facing us with mind engineering is that it will eventually become possible to modify minds in a number of ways to create sentient beings that are highly rational but which behave in ways that make the continued existence of a rights-based society highly problematic.
These are issues that will soon be -- if they are not already -- non-hypothetical.
