(T>B) A brief Pinkie primer

From this thread: https://www.fimfiction.net/group/50/the-writers-group/thread/434167/how-to-writing-pinkie-pie

Personality

• She's an altruist - she wants everyone to be happy all the time and devotes a lot of her own time to ensuring this on a tiered basis - her close friends get the most attention, then everyone within the general area, and she deliberately avoids thinking broader than that or she'd go mad. (As she grows up she comes to realise that ponies can't be happy all the time, anymore than she can herself, but it's still very hard for her to be around a pony who isn't without meddling.)
• She has a strong tendency to assume that others likes and dislikes are the same as hers - she can overrule this in the specific by learning more about someone, but no amount of doing so will stop her making the same assumptions next time.
• She's an extreme extrovert who can be very in-your-face and will not realise it's an issue unless it's pointed out - preferably gently, because the idea that she's made someone less happy can either send her into a pitiable slump or have her double her efforts as a form of restitution.
• She's highly intelligent - arguably as much as Twilight - but you'll never find a standardised test that'll show it.
• She's usually quite trusting, but that also makes her susceptible to rumour and gossip.
• Oh, and however different they are, she really loves and respects her family.

Abilities

• Pinkie Sense - the show may forget about it most of the time, but that doesn't mean an author should. Gives short-term notice of certain kinds of event - like falling objects - within a radius not coincidentally about the size of her social one I mentioned above. Said notification is via bodily signals, so it can probably be thrown off if she's sick, and new ones take her a while to figure out (by trial and error mostly).
• She can do impossible things with spacetime - traversing distances too quickly, doubling herself briefly, and so on - as well as other effects which might seem pulled from Discord's playbook. (Not quite the same, though - for instance, I don't think she's ever created or altered a living being other than herself.) She doesn't consider these as "magic" or use them consciously - it's all just her attempting things that seem possible to her and the universe acquiescing. Notably, it can backfire on her sometimes.
• She has items stashed all over for emergencies, and can produce equipment as large as a party cannon at will from... somewhere. Asking where, or checking if she ever obtained those items in a normal fashion, is not advised.
• Making a Pinkie Promise may give her some power to tell if you're considering breaking it and intervene.
• What magic she has as an earthpony, if any, is overshadowed by the above as well as the generally subtle nature of that tribe's abilities. Given her family, it could be rock magic of some sort, but something more unique is also possible. It's also not clear to what degree her pony magic is linked to the other stuff.
• Oh, and her human self, if anyone's interested, combines at least some of the above with the power to turn sugar explosive by touch as long as she's within a few miles of her geode.