Its been said that anomalies point the way to new revelations. Surely the only way to find a model that fits reality is to understand the anomalies. Would it be contentious to suggest that dark matter and dark energy are place holder labels for things we don't understand ? If it is, I'll use the vastly different theories proposed by serious scientists to describe both to prove, in terms that would be acceptable in any court of law, that they are just that - place holder labels for things we don't understand. Even a million different papers supporting an hypothesis around dark matter as a type of particle in the 3D matter world view, would not mean anything if the models to support them are made purely to match the results of our observations. Surely ? Otherwise I may as well accept that Father Christmas delivers my Xmas presents. When did we abandon fundamental understanding as the primary goal, and instead accepted any old theory that could be argued to support the data ?