By Tobias Carroll Some high-profile thefts are solved before too long, either through the efforts of investigators or via mistakes on the part of the thieves. Others linger for much longer — the theft of numerous paintings at the Isabella Steward Gardiner Museum, for instance, has continued to intrigue true-crime aficionados for decades. It hasn’t been quite so long since the theft of a large amount of jewelery from a Brink’s truck at a California truck stop — weeks instead of years — but that theft has also inspired plenty of coverage and a lot of questions. Some of that includes a debate ove…