Rapid Obsolescence
My son is taking the Spanish AP exam tomorrow and told me on Sunday he needed a cassette tape recorder for the oral part of the exam -- not one of the mini dictation ones but the kind of cassettes you used to use in your car.
Talk about a ubiquitous technology that has all but disappeared in 10 years! After a lot of looking, thank God for Amazon same day home delivery, I found one they could deliver in time today (the item gets good reviews, though the most recent review was in 2002!)
Update: Per the comments, fortunately they are providing the tape.