alt Hacker NewsOnly because it made to the HN front page.
A lot of stilted dialog first. Fine, fine, fine, I get it. Not everyone is a natural presenter.
Then I got to
> How copper and metal plates were combined
and I stopped.
"metal plates"? Copper's not a metal? Some details would be helpful. Zinc maybe?
I guess I would read this as “copper” as a primary requirement / necessity and some other metal as a secondary requirement. Are you just being pedantic?