Our overlords (can the beatings stop now? please?) have asked us to ask you to take a brief two question quiz regarding languages. Run along and do it ... otherwise the beatings will continue.
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A couple of years ago I could beat my son at chess every time.
Not any more.
As a child (and like most children, I imagine) I used to think conducting an orchestra entailed something like what Bugs Bunny does in this video:
Today in my recitation we discussed several problems in acoustics. One of them involved beats. This happens when two tones which are very close in pitch are played at the same time. There's a demonstration on the Wikipedia article.
Listen to this short recording: