Engineering Catastrophes

Why would anyone consult with a bio engineer on a dam failure? Or a freaking nanochemist on the topic of civil engineering? It's insultingly bad, especially when you consider they had a "civil engineer" make some comments on a previous topic of the same episode. Could they not be bothered to have the civil engineer talk about the failure mode of the concrete spillway? Or have the chemist talk about the rusting of bridge supports? But at least they tell us super important things in the narrative. Like Mr. "Physicist," "...for engineers this is bridge heaven" I'm very glad to have had an expert tell me that. Wow. So important to know. Besides the cancerous "experts" the show manages to be a worthwhile watch. The narration is quite well executed and topical, and the technical details of the narrative, while being a bit layman, suffice to document the "catastrophe" in question. Overall, a show worth watching while browsing the internet and there's nothing better on - if you remove the "experts."