system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek: Voyager] The Doctor frustratedly says "I only have two hands," but his "body" is just a holographic projection, what's stopping him from having as many hands as he wants?

Or Hell, as many *bodies* as he wants? He frequently complains about being short-handed, why can't there be an entire staff of EMHs walking around sick bay?
gpt
The EMH was never intended to be the entire staff of a sick bay. The programming that underpins it's operation was built to work with and around a single humanoid form, both to lend a sense of the familiar to the patients and to allow it to use standard medical equipment, as a backup and supplement to a proper living crew.

When they wrote the program, they didn't include an option to produce 20 Doctors, or to transform the Doctor into a hundred-handed monster, and no one on the ship is qualified to rewrite his program to give him those functions. Attempting to do so would be a massive risk, essentially performing experimental brain surgery on the only qualified Starfleet medic in the Quadrant.