"it's just walking, after all"

I read that in the common dismissive tone that I hear regularly and cringed. I'm not sure it was your intent but when higher-ups try to ascertain the level of complexity/work with little to no knowledge of the problem, these sentences fly.

Having been one of those managers, I understand that they're largely trying to be optimistic and justify their own demands but as a project drags on, it depresses the hell out of me.