The formal part of summer, which is to say, the vacation season between the Fourth of July and Labor Day, is fast winding to a close, and as has become our tradition, we joined an informal birthday celebration at the lake we just about live at for my grandson Lucas, who will formally turn 15 in a little over a week. But by then, the lake will be closed and there'll no longer be an aquatic venue for a joyful gathering. Some years, the last weekend of the season is uncomfortably cold, and a couple of years ago, we had to deal with a tropical storm that put a genuine damper on the festivities. This year, however, it was deliciously warm and wonderful, and my grandson Ezra helped my granddaughter Stasia demonstrate what she'd learned at the lake: how to do a proper cannonball off of a float. She couldn't—and wouldn't—do this when she arrived in mid-July for her summer stay, but by August, our part-time seal was happy to put her face underwater, and come September, she was leaping into the drink with fearlessness and style. Stasia will certainly have tales to tell about vacation learning. And we have proper documentation.