Porn makes you blind!

...For about 1/8th of a second.

Erotic (and horrific) images apparently crash our systems - it seems we might be 'wired' to take special note of bad things (mangled bodies) and good things (naked chix).

Shocked! Surprised! Not!

As the old saying goes, 'I just want to do it till I need glasses'.

The Economist article is meant to be a cautionary tale about drivers who temporarily lose attention because of billboards, or accidents they are passing, etc., but given that more than 1/8th of a second is needed to; process the change in radio stations, answer the cell phone, or slap the wailing child in the back seat, I think erotic and horrific images on billboards are probably safe for now.