For example, this Mysterious Seashell.
"So it really might answer my question?"
"It really can. But the harder the question, the lower the odds. Yesterday, I asked it what 1+1 equaled. For the first nine times, it answered, 'There might be a number.' It only answered 2 on the tenth try. If you ask what 2+2 equals, you'll need to ask twenty times..."
"It all depends on luck. But the good news is that if it gives you a perfunctory answer, you'll be able to tell immediately. So if it gives you a real answer, you'll notice right away too."
"I suspect that if you ask whether there are people outside this world, you might have to ask hundreds, thousands, or even tens of thousands of times before it gives you an answer."
"...Lend it to me for a few days," Yvette said.
"You can, but what are you planning to do?"
"I have something I want to ask it. I need an answer," Yvette said firmly.
"..." Chen Luo glanced at the note above Yvette's head, then at Yvette herself. After thinking for a moment, he nodded.
"Use it however long you want. I don't have the patience for it anyway. And if the question you ask is too difficult to answer, it might take tens of thousands of attempts before you get one."
Since he wasn't worried about losing the miraculous seashell, Yvette could play with it for as long as she liked.
"I'm ready." Yvette gripped the Mysterious Seashell in her hand.
Yvette was prepared to spend the next seven days battling the Mysterious Seashell in her hand.
This thing really was quite good. If Chen Luo hadn't already had the Akashic Book and Scouting Ability, he might really have treated it as a treasure, though it