If I had to choose, I'd choose "ignorance" because the common description for this particular mis-registration is "slow train." Perhaps "train in reverse" is also used, and I've just not heard it.
If you liked this listing, then you'll love the following:
http://www.ebay.com/itm/295-SLOW-TR...370105245768currently listed by Mr. L a n g s. I can save a clickthrough for our friends on dialup and relay that it is a buy-it-now for $349, albeit slightly slower, and no straightedge. (And I'm just pointing out this listing, not commenting on what a fair price might be, because I have no idea what the market bears.)