I've often been gobsmacked at how thick many of the people are who appear on reality tv. The cast of TOWIE, Geordie Shore, BB (although there has been exceptions on that show) and now Love Island. The Love Island housemates were asked when was the Battle of Hastings and couldn't answer and some didn't even know that Great Britain wasn't just one country!!
Reality tv seems to be sending the message that it's alright to be dim, just so long as you get your face on tv.