As Tim Knight puts it on The Mark, he and Kai Nagata have some differences: "We're separated by 50 years and 2,000 miles." But also similarities: Both are former TV journalists who believe the industry is mortally ailing — and both have recently penned widely read missives on why; Nagata on his blog, Knight on J-Source. One believes the industry can be saved; the other does not.

As Tim Knight puts it on The Mark, he and Kai Nagata have some differences: "We're separated by 50 years and 2,000 miles." But also similarities: Both are former TV journalists who believe the industry is mortally ailing — and both have recently penned widely read missives on why; Nagata on his blog, Knight on J-Source. One believes the industry can be saved; the other does not. Over the next three days, they will debate whether the medium is worth saving on The Mark. You can follow along here.