I notice the difference immediately after my most casual face-to-face social revelation of the "number" -- even if it is merely a reminder to my friends and my children. The change in expression is immediate, and the processing in the receiver's brain, while subliminal, is obvious.
One wonders how Frederic Henry would handle the job of evacuating wounded from Syria, Iraq, or Afghanistan, 85 years after he was deployed to the World War One Italian front as an ambulance driver, by Ernest Hemingway, in A Farewell to Arms.
Dickens, a fierce critic of the Victorian class system and the treatment of the poor, marries social realism to sentimentality here. It succeeds in this crisp rendition because Scrooge's ethical awakening isn't forced.
Great Expectations, the television miniseries made in 2011, was one of those few, rare films which I enjoyed as much as the book. Dicken's storytelling has a quality that cannot be put on screen, but the main characters were cleverly translated.