What’s obvious to you is often a necessary anchor for someone else. Skipping it doesn’t make the conversation faster: it creates gaps that surface later as misalignment or repeated confusion. The instinct to avoid stating the obvious comes from not wanting to sound condescending, but in a complex system the shared language about basic assumptions is what holds collaboration together.
This matters most when working with [[Visual thinkers vs. visualisers]], where two people can look at the same diagram and see different things without either realising it. Saying the obvious thing creates a surface for disagreement, and disagreement caught early is cheaper than misalignment discovered at the end of a build.