In message 005701c1ae3a$2ca2fda0$7689590c@dshilling, Dana Shilling dshilling@worldnet.att.net writes
James Mansson said:
It doesn't seem unreasonable that the Federation would want a way of restraining him while in custody.
[...] Therefore, a permanent solution might prove some safeguard. If it weren't for the obligation to make the series last longer than a total of half an episode, the Federation would probably have been better advised just to shoot everyone who caused serious trouble instead of twonking around with prison planets and slave pits. (NINOTCHKA: We will soon have fewer--but better--Russians.)
Shipping convicts off to settle the less salubrious colonies is ever so much more humane than hanging them.