As far as we are able, yes. But there are things that we simply lack the ability to observe and study at the moment. [Right now all they could really do about a lot of things was to hypothesise. An interesting mental excersise, perhaps, but not a very helpful one until they could verify things.]

Corruption, unfortunately, has been too enmeshed in the Song of creation by now. [Unseen or otherwise. It has been there since the first note of it was sung and it will be there until the Second Music when the world will be broken and remade free of it's marring.] Some things we can never truly know with perfect clarity. All we can truly do is strive for the light and hope our best is enough.