[refurb]

World leading experts usually have an impressive publishing record in the field, often a top academic research position and a long record of speaking at important global conferences on the area.

Does he have all those? I'm honestly asking, I've never heard of him.

[jononomo]

Hey, you basically worship credentials, so you're not going to be impressed with a person who doesn't have them regardless of their breadth and depth of knowledge. I don't know what to tell you.

[refurb]

That’s not credentials, that recognition by others of expertise in a field.

[sarchertech]

No he doesn’t.