I’ve been watching the Original series again and made an observation
Episode with the Immortal guy who made the “Perfect Woman” Android
and the Classic Mudd episode with all the seemingly perfect androids.
Why was Commander Data such an abnormality in The Next Generation?
Are you talking about Season 1 Episode 7 - What are Little Girls Made of?
And
Season 2 Episode 8 - I, Mudd
?
In my opinion the main reasons Commander Data is an abnormality in comparison to these other androids is:
1) If I remember correctly, in Season 1 Episode 8, the androids figured out that they were enslaved, their masters became afraid of them and tried to destroy their creations, the androids figured it out and destroyed their masters. Therefore would have destroyed anyone that would have copied this tech.
2) In Season 2 Episode 8, the androids were run off of one central computer, were programmed to serve, and had an overwhelming desire to serve, even if it meant enslaving those that they serve.
3) Star Fleet didn’t have the tech to create their own androids at that time.
4) Commander Data was created by Dr. Nunian Sung, and isn’t alien tech.
5) Data was programmed with the desire to be an individual, the desire to learn, the desire to improve himself, the desire to contribute to society, to be accepted, and most of all to be human.