I love Star Trek, but using the transporter as a plot device led to some really bs situations. Tuvix. The time it made everyone children. The time Picard fucked off to be an energy being so they just used last week's pattern to rematerialize him... Thomas Riker... I could keep going.

I mean think about what would need to happen for Tuvix to exist. The computer would somehow have to do some really complex genetics work to create a hybrid species and somehow merge the 2 very different brains into one stable and coherent organism.

An IRL tuvix situation would be a dead blob of body horror on the transporter pad. They'd be like, fuck clean-up on isle 5, data corruption and pull the last good backup. Because keeping literally just the most recent copy would be criminally negligent. Then they'd rematerialize you but it was you from 2 days ago and you get to wonder for the rest of your life what the other version of you did in the 2 days.