Passing kidney stones has a hard part (kidney to the bladder) and an easy part (bladder to the free world). For me, the first part usually lasts for a few days and is no fun at all. The second part can be delayed by weeks or months and is often triggered by airplane travel. This morning, I welcomed this fine collection of stones including one in the shape of a heart (if you are a lover) or an arrowhead (if you are a fighter). The long dimension of the triangle is about 3.5mm. I am now something of an expert on kidney stones but still have no idea why they always seem to arrive in large groups. Perhaps the big one makes a way for the little ones. I would rather pass a hundred small stones than one big one, much less a big one with sharp angles.