Pareto distributions: start with hypothesis that any attribute you are looking for in a given sample is Pareto distributed in the whole. Applies to everything. It's more than the 80:20 rule. The shape of probability distributions in general (s-curves, bathtub curves, etc) is a useful filter for a fast path.
Negotiation: I recommend starting with the classic, "getting to yes." The level of confidence you can bring to a discussion when you have a clear idea of what the outcomes look like, and to have pre-accepted them, is a form of charisma. Learning it is also good for the culture in general.
Not the GP, but it's a book, 'Getting to Yes: Negotiating Agreement Without Giving In'
by Roger Fisher , William L. Ury, et al.
I read it ~30 years ago, the only thing I remember is that you always want to understand your "Best Alternative to a Negotiated Agreement" (BATNA), e.g. knowing that you can walk away from a car dealer's deal, if you don't like the terms.
I haven't read getting to yes. But I read "never split the difference" and highly recommend it (caveat the author thinks getting to yes is not the best approach).
Pareto distributions: start with hypothesis that any attribute you are looking for in a given sample is Pareto distributed in the whole. Applies to everything. It's more than the 80:20 rule. The shape of probability distributions in general (s-curves, bathtub curves, etc) is a useful filter for a fast path.
Negotiation: I recommend starting with the classic, "getting to yes." The level of confidence you can bring to a discussion when you have a clear idea of what the outcomes look like, and to have pre-accepted them, is a form of charisma. Learning it is also good for the culture in general.