Think fast and say nothing
- if I say/do nothing, will the outcome be one I'm just as comfortable with?
- how important is it to me to be seen to be endorsing/opposing what's going on?
- can I move this discussion in any way or change this person's mind or is it a done deal and will I just be making myself feel better for trying?
- ...and all of the above can be summed up by: is it useful to the project, the company, or to me to jump in or is my time spent better elsewhere?