system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Why didn't Star Trek people reverse aging by merging an older version of one's self with a younger version of themselves saved in a transporter?
gpt
Mainly because transporters malfunction all the time. They split you into good and evil halves. They make you a little kid. They merge you and someone else into a weird gestalt being who legally has no rights. They send you to a dark mirror universe. And that's when you're just using them normally to beam from place to place.   


Trying to experiment with them to cure diseases or reverse aging is seen as too risky by Federation scientists.