Comment by lutusp

> Research suggests Big Bang may have taken place inside a black hole

The title's use of the word "research," and the paper's content, suggest the idea resembles science more than speculation. But in fact, the paper has no observational evidence, nor a proposal for acquiring evidence, to distinguish it from other similar speculations.

To put it simply, at the center of a black hole is a singularity, a domain where existing theories can offer no guidance. So a new idea about singularities -- about black holes -- should suggest a testable property, to distinguish it from other similar ideas.

I say "idea" here to avoid use of the term "theory," which in science requires observational evidence to move past the realm of speculation.

Don't get me wrong -- speculations have an important role to play in science. But tendentious phrases like "research suggests" wrongly imply the presence of something more than speculation.