Effect of a giant meteorite impact on Paleoarchean environment and life

The downvotes are misplaced. This is a good question.

The value of HN is when people-who-know help curious folks understand the validity of a story. Surely someone here is more capable of assessing this story and I agree that skepticism is in order at first.

Skepticism should begin with the skeptic's own motives. A skeptic's second question (after "Really?" or "Why?") should be, "Why am I asking?"

Do they want to test the claim to learn something, or to dismiss it, just to dismiss it?

If they're asking questions which are literally answered as part of the claim, they need to start over, and start with themselves.

> Sealioning (also sea-lioning and sea lioning) is a type of trolling or harassment that consists of pursuing people with relentless requests for evidence, often tangential or previously addressed, while maintaining a pretense of civility and sincerity ("I'm just trying to have a debate"), and feigning ignorance of the subject matter. It may take the form of "incessant, bad-faith invitations to engage in debate", and has been likened to a denial-of-service attack targeted at human beings. The term originated with a 2014 strip of the webcomic Wondermark by David Malki, which The Independent called "the most apt description of Twitter you'll ever see".

https://en.wikipedia.org/wiki/Sealioning

The comic strip in question is actually adorably absurd:

http://wondermark.com/1k62/