I was planning to write a long blog piece about how Google, Wikipedia, and eBay have changed how we remember things.
The tentative title was “Nostalgia really isn’t like it used to be”, and I was going to illustrate the point by explaining how a few minutes remembering what it was like to clean out the ashes from the coal-fired boiler in the kitchen (c.1956) had eventually, and serendipitously, led me to post a successful bid on eBay for a Mainline model of a class 45 diesel locomotive (D49, “The Manchester Regiment”).
But then I saw that xkcd had already captured the essence of the situation, so I don’t have to.