How many times Becky?

Tonight ITV will showing the first episode of it's adaptation's of William Thackeray's novel Vanity Fair, the tale of social climber Becky Sharp. This will be the fourth screen version of the novel in 31 years, prior to this year's ITV version the BBC made it for TV in both 1987 and 1998 while there was a big screen version starring Reese Witherspoon. Why some pieces of text get made over and over and again tends to get the same answer, it has something to about the day they were made. Now in the 1980s you could make the case of equating Becky with the Prime Minister of the Margaret Thatcher but other than that it seems just tired thinking. Here is a thought to finish on it has taken over a century after it was first published for a period accurate version of H G Wells classic War of the Worlds even with the advances of VFX in the last 30 years.