just that facts that help the case must be emphasized and facts that don't, minimized. Scientists call this cherry-picking, and it can get them in a lot of trouble
This is so true, Prim!
I remember in my first legal writing class, as a 1L, I didn't do well because I had been trained to write as a scientist for so many years (passive voice, allowing the facts to suggest the conclusion, very tentatively stating said conclusion and qualifying the results). Needless to say, that did not work when trying to write persuasively as a lawyer!
Prim, there are situations where you need to follow the evidence wherever it leads as a lawyer. In addition to writing persuasively, lawyers also have to write memos for clients that analyze the law and give an opinion as to how one's particular case might turn out. In that situation, you need to research the case law most similar to your case (case law, meaning previously decided cases), and analyze the law and facts of these previous cases in light of your own set of facts, and predict a likely outcome. You don't want to be persuasive here.
In my practice, I'll take "marks" that someone wants to register on the Federal Register of Trademarks and do research with respect to the registrability of the mark. Then give the client the good/bad news (usually the more committed they are to a mark, the more difficult it will be to register
). Also, we research "patentability" of an invention by researching "prior art", i.e., whether this invention has been disclosed in (or is obvious over) the public domain or the patent application databases. In both situations, clients appreciate full disclosure.
Edited to add: not only do clients appreciate full disclosure, they are likely to sue you for malpractice for not advising them of the odds that are stacked against them