I have to be cryptical not to give away the confidential details of a project I am working on, sorry.
Some opinions are universally agreed upon, no facts, backup, or convincing is needed. (Unless you want to disprove the common understanding). Still, many consultants cannot resist and launch an effort to quantify something that is blatantly obvious, but is extremely hard to quantify exactly.
In a legal case, this non-issue, all of a sudden turns into a major obstacle:
- Shaky assumptions can easily be attacked from left, right, and center, putting the credibility of your entire presentation at stake (what if all the other analysis was this "sloppy"?)
- Lots and lots of data takes time to present, and all of a sudden this issue which is either already agreed upon, or not important at all, is taken up 75% of the presentation time and discussion. The "after taste" of the meeting is the impression of expensive consultants that could not defend their numbers.
Always ask yourself: do I need to convince the convinced, how important is this issue, and when is the best time to bring it up (if at all)?