Seen in a post office on Maiath (Tasein Ways):
The postal service is not accepting shipments of biologicals, especially live biologicals, for shipment via packet torpedo at this time, or at any other time. Customers are requested not to attempt to bypass this restriction.
Despite the events depicted in the recent Galactic Studios InVid, Fatal Sunburn, it is not possible for biologicals to survive shipment by packet torpedos, which lack all inertial damping and use accelerations well beyond the tolerances and indeed structural integrity of all known sophonts. To be blunt: your package, or yourself, will arrive as meat chutney, and the postal service will bill your estate for the cost of mopping out the parcel stowage.
If you need to be there on time, consider mindcasting. Mindcast and bodily reconstruction data can be sent by packet torpedo quite safely.
Torsk Induts, Postcatalyst General
(This piece inspired by this ST:TNG episode in which someone was shipped to the Enterprise inside a photon torpedo casing accelerated to Warp 9. Needless to say, if you tried the equivalent to this in the ‘verse, it wouldn’t be a case of “sit up and take off your breath mask”, but rather a case of “Please pour organic slurry enclosed into healing vat, and run attached reconstruction program. Stir, and allow two hours to finish baking,” in a similarly gruesome fashion to the Gideon Drives of the Pax in Endymion.
…which is why it’s much easier just to send the mindcast data.)
Are packet torpedoes primarily used to reach systems outside the stargate plexus?
They’re intraplexus items. You’d need much bigger drives to go interstellar subluminally in a reasonable amount of time — or, as tends to be most practical, a starwisp.