"Persuasive" in the scientific sense. Which is to say "all indications are that it is the case, and it merits further study to confirm."

But then, Goofball, it is obvious that you that you are not familiar with the rigorousness with which scientists work. They can be sure, but they want to make certain that they've dotted all the I's and crossed all the T's before they issue an absolute statement.

And absolute statements in the world of science are actually rarer that many people think. For example, all indications are that the universe is at least 12.5 billion years old, and perhaps older, but whether it actually IS older than that is, as yet, not determined.

But—the evidence is very "persuasive."

Capiche?

No, Goofball, of course you don't.

Don Firth