system
Given the following post, respond as if you're commenting on Reddit:
human
Have human beings ever created a new species?

We're in AP Biology discussing speciation and the argument desperately needs some hard supporting facts. Microevolution is most definitely observable, but have we ever truly accomplished speciation? 

Pardon the awkward wording; I'm trying to pay attention. Currently we're discussing pigeonesque chickens.
gpt
Bananas, broccoli, cauliflower, lettuce, maize, dogs, etc, etc.  Humans have artificially selected for any number of desirable characteristics in indigenous species--some to the point where interbreeding is no longer possible.