Amazon.com has software at its web site that tries to figure out what I might want to buy. It gives me lots of suggestions. I remember when I bought a really abstruse programming book on general search patterns. Amazon told me that people who bought this book also bought ... the first three Harry Potter books.
Right now, Amazon's recommendation logic has gotten quite annoying. I recently bought a watch. Now, I'm getting email suggestions for great watch bargains. The suggestions are well-targeted to me, except that – Hello?? Amazon?? I HAVE a watch. How many do I need?
Dear Amazon, please suggest more watches to me, in about six years. I might need one by then.