--- Sylvie ---
"Is this really the best way to build something cool?" asked Sylvie as the gazed up at Callisto. The girls had all decided collectively on a beach day… despite none of them wanting to swim in the salty water. This had caused Callisto to be in charge of activities for the day. Vivian had driven everyone out there, but she was currently relaxing in the sun. Potentially asleep. There were some plans to mess with her later, depending on how things went.
"Yes indeed it is," confirmed Callisto as she helped deliver her next bucket of wet sand.
"Why?" asked Penny. "What are the maths behind it?"
"You want sand that's just wet enough to clump together but not so wet it's basically a fluid," explained Alice. "It's actually a bit of a complicated balance to strike. Too dry and the sand crumbles, too wet and it… sort of slides? If it's just wet enough than we can make just about anything we want,"
