Ment
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Yeah, that's pretty clear. As I said, I was thinking of just leaving the stones at the entrance. Maybe I would have done that.
Regarding the pulsating effect: I thought it was going to explode any second, and the association with an explosion was clear. Therefore, keeping them close would be stupid. Besides, I couldn't have expected that they would specifically paralyze the lady even before she picked them up and looked inside. That's what happened.