In about 1990 my kids were 8 and we had an Apple IIGS computer. Virgil was patient and persistent as a kid (played Battle Chess through all the moves he needed to see all the battles and all the deaths). I'd heard that LOGO was educational and fun, so I bought it and set Virgil loose on it. He discovered that by typing in a long string of random numbers and pushing a single key he could make the cursor draw lines that bounced all over the screen, leaving trails. There was probably a fantasy about light lasers - he's that kind of kid. It seemed a random and useless activity to me, but experimenting was part of the point of the program, and he did no harm. It'd take about 10 minutes for him to type in the numbers, then he'd call me (and sometimes his twin brother) over to watch the show. But one time when the straight lines started pinging around the screen, a perfect circle appeared, clear of lines, in one part of the screen. As the screen continuued to fill, the circle only became more defined. It was spooky, and as far as we could tell, totally random.

I feel like I'm living in that circle now. Severe thunderstorms all around, tornado warnings, funnel clouds sighted, hail, 4 people hit by lightning in the past week, street flooding, and this little spot has had about 2 minutes of rain last night in total. A couple days ago the front yard got damp (dry under bushes and trees) and the back yard stayed completely dry.
AAARRRRGH!!!