Observationally

We live in a very special time: The only time we can observationally verify that we live in a very special time!

The Cosmological Principle, according to the research team, is assumed but has never been demonstrated observationally 'beyond reasonable doubt.'

However, before most of this was experimentally and observationally discovered, they were perhaps best known for their “almost unique” ability to squirt ink when harangued, creating a smokescreen before jetting off to safety.