Lex Talionis is a principle which says that any ability given to one person must be given to all.
What does this mean?
Abilities such as:
- Ability to determine truth
- Ability to determine moral truth
- Ability to determine what is sufficient justification
Think about what this means in case of body ownership.
There are only two options:
- Person can determine when other people lose body ownership
- Person cannot determine when other people lose body ownership
Should 2 be given to one person, it would be given to all, and no contradiction would follow.
But if 1 were to be given to one person, per Lex Talionis, it would be given to all. But then, a contradiction follows. If everyone has ability to deny everyone of body ownership, then no one can have body ownership.
Likewise, it doesnt matter which justification person uses to deny body ownership. The ability to determine sufficient justification would per Lex Talionis likewise be universal. So anyone could for any reason deny body ownership of anyone.
Because 1 is objectively false, only 2 can be true: person cannot determine when other people lose body ownership.
Because no one can take away body ownership from others, it follows that everyone has body ownership.
This includes trans kids. In other words, they own their bodies, and thus can make modifications to their bodies at will.
So if doctor approves, and parents provide money for surgery, it is not possible to logically deny trans kids of surgery.