live! from Soda Hall!
Meh. I was all set to get an MRI brain-scan tomorrow morning in return for taking some quantum superposition of a sugar pill and this substance:

But it seems that "because of their cholinomimetic actions, cholinesterase inhibitors should be prescribed with care to patients with a history of asthma or obstructive pulmonary disease" I'm not eligible for the experiment. )-:
The other funny thing that happened today is that I called Diane and Christos Papadimitriou answered the phone!

Re: nitpicking....
i'm going to have to go with greenanemone on this one. a mixed state is different than a superposition. a mixed state describes an ensemble of states. maybe 1/2 of the states in the ensemble are in the state |00>+|01> and maybe the other 1/2 are in the state |00>+|11>. a superposition describes one state which could have components along a number of basis states. if you want to learn more about mixed states look up stuff on the "density matrix." sakurai has info about it. but actually, nielson and chuang, a quantum computing text, might be the best resource.But I think that 'superposition' does have the meaning I intended.