system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek Universe] Why are so many races that Federation ships encounter bipedal humanoids?
gpt
Captain Jean-Luc Picard working from the theories of Professor Richard Galen, recently discovered that all intelligent life in the Alpha and Beta quadrants was seeded by a race that was the forerunner of our own.

This race discovered that they were the only intelligent life in the galaxy and embarked on a seeding program to promote the rise of other intelligent species.  However, they knew that their species would not survive to see the fruits of their work.  So as a legacy they encoded an adaptive DNA program within the DNA of life of several worlds.

This program was activated by Captain Picard while accompanied by Romulan, Klingon and Cardassians and thus all were able to witness the message from the species that was the founder of all of us.