system
Given the following post, respond as if you're commenting on Reddit:
human
[Mass Effect] Shepard is successful and established in the military, yet knows almost nothing about basic interstellar life. How did Shepard get such a high rank while so uneducated?

Shepard's N7 armor indicates education to the highest degree possible at Interplanetary Combatives Training, known for being an intensive school - and has worked up to the rank of Commander.

Yet Shepard has to be introduced to all the other races as if it's the first time, doesn't know what the Citadel is, doesn't know how Mass Relays work - and frequently reacts with surprise when hearing basic explanations.

How can a Commander with so much education have so little knowledge, and how did it not affect such a significant military career? Why does nobody question such ignorance on basic facts?
gpt
They taught him all that humanity knows about the galaxy, which at the time wasn't that much. Remember humanity hasnt even been in the Galactic community not even a century. Shepard was famous because he/she made a lot of firsts for mankind. Shepard is the person who rewrote textbooks and politics of interstellar diplomacy and knowledge.