@fide for example you have an idea that you want to model one thing. then you start adding in lines like “it needs to have this also, and this and this” and soon you have loads of things that you need to model that are unique modeling wise, so the idea itself that could have hold in its own, now had bloat of stuff that is not needed. and this wouldn’t be a problem if you have half a year to finish everything.
but when you have this kind of course where you have set goals, and time is limited due dayjob, then its best keep things simple as possible. hope this helps 🙂