I agree but throwing the figurative faeces at Degrasse T isn't...

I agree but throwing the figurative faeces at Degrasse T isn't debate or a means of keeping social cohesion.

It depends what you mean by "expert" - it has to be someone who has competences in an area - not barista Raj who suddenly thinks he can service high-end cars because he read a blurb somewhere - or discredited del Bigtree on astrophysics lol. Without some foundation or fundamentals the other poster was talking about, you're inviting the proverbial * to the faecal show.