How do you play by the rules when no one knows what the rules are?

On a recent visit to Denmark, I got to thinking about 3D printers. This was, of course, because of Billy Joel. 

I love my smartphone’s high-tech tricks. They’re conve­nient time-savers. But mostly, if I’m being honest, it’s because they give make me feel like I’m living in a world that was still science fiction when I was a kid.

I may have clicked on one or two of those baits, or a few, or too many. But I’m still waiting for that promised earth-shattering revelation.

The goddess of love and the god of the sky meet a 100-kg hunk of man-made high-tech science.

Some quirky math conjures up a time machine of sorts, letting you look at the world through the eyes of someone who may be more like you than you think.