Hello there, EC4004 students. This week we are all about the Law of Demand, Supply, and Elasticity. Get these wikipedia entries into you to prime yourselves for the lectures on Thursday and Friday.

Also, decide whether you like bubbles. That was meant to be cryptic, and you'll find out how cryptic on Thursday. No more unvolunteering, please!

Here are the experimental results from Friday's lecture. They answer the age old question, which has haunted man since ancient times: what happens when you give young men too many chocolate bars?

Diminishing Marginal Utility, that's what.

Well done to the lads for volunteering. More like them, I say!

If you were at the lectures, take the survey and let me know how I did. 

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• EC4004, Economics for Business, Lecture 2: Utility