My apologies as asking this as SLF.....
But the whole point of CRM is for you not to feel inhibited in questioning your colleagues actions. I work in a different line of work but similar rules do apply - Do not feel embarassed about asking a question no matter how trivial cause hind sight is the only thing that does make it trivial.
Bite the bullet and say hold on - Why ? and you will get an explanation, it may be good it may be bad - but you live and move on and are more educated
If you cant ask questions your not sharing, if your not sharing your not learning and if your not learning then your doomed.
Sorry for my pessimistic approach but as a software dev - we work on similar principles