"That is simplistic. It's more complicated than that - the situation is extremely complex..."
Such terms mean: I understand and you do not; so shut-up and do what I say.
Things are, in a sense, much too complicated for any-one to understand - and if no-one understands than no-body and nothing understand.
When a single person cannot understand as-a-whole, then it is not understood (and people are in reality merely implementing simple algorithms, which they do not understand).
A group of people, each understanding a little bit - nobody understanding the totality, and called a Team; does Not amount to understanding. They are flying blind.
At another level - it is all terribly simple, and every-body understands... understands well enough to be going-on with.
At the level of data/ information things are impossible; but at the level of intuitive knowing (if we can reach-down and touch-this, swamped as it is beneath a swirling mass of data/ information) then everything needful is known and everything necessary is possible.