"Uncertainty feels similar to love."
Yuki said quietly.
Riku was surprised. "What's with you all of a sudden?"
"No reason, just somehow."
Aoi asked quietly. "What do you mean?"
"Not knowing the other person's feelings. Maybe that's why it's exciting."
Aoi pondered. "Interesting perspective. Shall we analyze it information-theoretically?"
"Can you do that?"
"Let's try," Aoi opened her notebook. "First, consider romantic uncertainty as entropy."
"Entropy?"
"Probability distribution of the other's feelings. Like, dislike, neutral."
Riku asked. "What's each probability?"
"Don't know. So entropy is high."
Yuki understood. "Because it's uncertain, it's exciting."
"Yes. If you knew for sure you were liked?"
"Entropy is zero," Riku answered.
"Does the excitement disappear?" Yuki thought.
"Might decrease," Aoi said carefully. "But that's not a bad thing."
"Why?"
"Because it becomes a stable relationship."
Riku had a different perspective. "But isn't zero entropy boring?"
"True. Completely predictable love lacks stimulation."
Yuki asked. "So moderate uncertainty is good?"
"It might be," Aoi acknowledged. "Surprise keeps things fresh."
"But too uncertain?" Riku asked.
"That's anxiety," Yuki answered.
"Correct," Aoi nodded. "Too high entropy causes stress."
"Then what's optimal entropy?"
"Different for each person," Aoi explained. "Individual differences in risk tolerance."
Riku thought. "I might like high entropy."
"Unpredictable love?"
"Yeah. I want excitement."
Yuki said quietly. "I prefer it lower."
"Stability-oriented," Aoi smiled.
"But," Yuki continued. "Not zero. I want some surprises."
"I get that," Riku agreed.
Aoi introduced a new concept. "There's the idea of information gain."
"Information gain?"
"How much uncertainty decreases by obtaining new information."
Yuki understood. "Like confessions, or date invitations."
"Yes. These give information about the other's feelings."
"Entropy decreases."
"But doesn't go completely to zero," Aoi added. "Fine details are still uncertain."
Riku asked. "So is love a game of gradually reducing entropy?"
"You could say that. But you don't need to aim for zero."
"Maintain moderate uncertainty," Yuki summarized.
"Good relationships balance predictability and surprise," Aoi acknowledged.
Riku laughed. "Uncertainty and love compatibility. Good title."
"Talking about love with information theory," Yuki was embarrassed.
"But it might be surprisingly accurate," Aoi said.
"Senpai, do you have experience?" Riku asked jokingly.
"That's a high-entropy question," Aoi deflected.
The three laughed. Uncertainty. It's the spice of love. But moderation is key. Information theory teaches even such things.