Have the 2009 course materials for CT7 changed since the 2008 course materials? I ordered the 2008 CT7 materials in 2008 but didn't start studying them until now, so I would appreciate knowing the answer to my question. For example, while going through the 2008 notes I've found a few inconsistencies, and I wonder if these were corrected in the 2009 notes. For example, p. 15 of Ch 8 - introduction of LRAS without prior definition (I had to google LRAS to find out what it stood for!) Q2.2 of Q&A Bank Part 2 - a question asked about diminishing marginal returns, however we had only learnt about diminishing marginal productivity If I'm mistaken about these supposed errors, I do apologise, must be too much late night studying!