All opinions about a certain matter are like spokes in a wheel. They originate from all possible positions around the hub, and describe the hub differently. They agree about that there indeed is a hub, but disagree about what the hub is.
The problem with such hubs is, however, that they are not realities, but abstractions that emerge with speech. We call them “truths”, but their nature is actually both very simple and very complicated at the same time – simple by objectively being interfaces, and complicated by subjectively being return points – making them perfect as unions of all differences. Everyone can agree on that they exist, but can’t agree on what they are. Their nature is therefore inherently elusive.