Films like Mank are so incredibly rare nowadays, that people dissect them as strange specimens of something that went extinct decades ago. Its artistic rendering of a past era is magnificent, and trailers drove everyone wild at the expectation of reliving the golden era of Tinseltown. David Fincher makes Mank with the confidence he always holds. Netflix opens the wallet and lets him get away with making an improbable film about Hollywood. This is work of passion by one of today’s most important filmmakers, and it regards one of the most important films ever made. It’s not explosive, or luxurious as you would expect. It’s an honest rendition of a…