I am increasingly horrified and astounded by the number of spammy posts on Facebook along the lines of 7 - 4 + 3 x 0 + 1 = ? 3 - 3 x 6 + 2 = ? Where THOUSANDS of people have posted their answer, and most of them are wrong. I expect bottom set students to get this sort of thing right, and quickly too. I don't know why I'm posting this here. I just needed to vent my frustration with standards in society!