When you’re a kid at the beach, you spend a lot of time and effort building a sand castle. It’s cool, a lot of fun, and doomed to destruction. When high tide, or random kids, or hot sun come along, the castle is going to fall apart. It doesn’t matter, kids build them every year by the thousands, probably by the millions across the globe. Each is special and unique, each took time and effort, and each will fall apart.
The thing is, they’re all over the globe, and seasons are different all over the globe, so it is conceivable that there is a sand castle built or being built every minute of every day. Not easily provable, but doesn’t need to be for this discussion. when it is night and middle of winter in the northern reaches of North America, it is summer and daytime in Australia. The opportunity for continuation of sand castles is amazing.