Twilight Sparkle learned how to be a unicorn at Celestia's knee, and few know more about her than magic. She learned how to be a pony from her five PFFs, and they count her as one of their most treasured friends. Now, Celestia wants her to learn the science of living deliberately, which will take all of the skills and resources she's accumulated so far.

A note on tags: FIMFiction considers 'Adventure' and 'Slice of Life' to be opposed tags, but I wish I could have both. A mighty river is fed by many streams. (Maybe I should just alternate each week.)

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

An aspiring rationalist gets punted into Equestria - and instead of being turned into a cool griffon, or powerful dragon, or even a standard pony... discovers he is now a milk-cow, part of the herd.

Part of the Chess Game of the Gods crossover.