Broken Link - S4-E26
Revealing mistake: During the fight between Garak and Worf near the end of the episode, a Jefferies tube door is knocked out of its frame to reveal the end of the set - a dark room with a wooden scaffold and various other pieces of equipment (slow-mo helpful but not required). (00:36:00)
Revealing mistake: As Kurn is chastising Worf in the infirmary, the actor's prosthetic nose has become detached from the rest of the Klingon make up. You can see the nose wobbling around as he talks.
Revealing mistake: When the Lakota opens fire on the Defiant, steam begins pouring into the Defiant bridge. The device releasing the steam is visible.
Revealing mistake: As Sisko and Omet'iklan are arguing in the Mess Hall, the dead Jem'Hadar solider can be seen breathing. His chest is seen moving up and down. (00:30:35)
The Way of the Warrior (2) - S4-E2
Revealing mistake: During the fight in Ops, the laws of physics takes a slight dive. While Worf is fighting the Klingons, he hits them with his Bat'leth or his mek'leth, and a second later they react to the hit.
Revealing mistake: Lt. Commander Eddington is wearing the rank insignia of a junior grade lieutenant.
Answer: Part of the answer is found in "The Search: Part II" (season 3 episode 2). The female changeling told Odo that "the urge to return home was implanted in your genetic makeup. So he hardly has a choice in that. But being a sentient, thinking being, he recognizes the atrocities that his people are behind and he can't condone their actions. So it's a matter of his conscious mind warring with his instinctual gestalt. But on a more general level, we all instinctually wish to be among people who are like us. No matter how much he may like and love those around him and feel that emotion returned, there are numerous aspects of his life and existence that absolutely nobody on DS9 can empathize with or understand. And that's not even to address the pure joy and acceptance that is brought by the Great Link.
Garlonuss ★