A friend of mine had a very loud voice. As we were driving he would spot someone keying the lock on their own car or house. He would shout in the loudest voice possible: "HEY YOU …. GET OUT OF THERE". The funniest part is that it worked. People would jump and look guilty as if they were breaking into their own homes!
A couple of friends of mine used to do a funny prank wherein they would wait until someone was walking into some area they were unfamiliar with. The would blurt out a curt "It's a bathroom" … and the more times than not the person being pranked would dead foot stop and turn around.
Good presentation on adiabatic quantum computation. In information theory class I learned that by using the Laplacian form and maximizing entropy you can find the description of physical systems. The adiabatic minimization will work well in these scenario.
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