The Reckoning is something people take at the age of 16 in the Silver Blackthorn Trilogy. It decides their social class in society, in the country of St George.
The Reckoning will chose the social rank (Trog, Inter, Member, or Elite) for the person taking the test. It has been happening for the past 14 years, prior to Reckoning.
The people taking the Reckoning use thinkpads.