While I have no idea if there's an idea for a thesis in this, I am very intrigued about the observations of N. lowii pitcher fluid consumption that was observed in this thread. Does this water usage have anything to do with the other revelations on N. lowii (& rajah) adapting as toilets for shrews? Why does N. lowii use this much fluid and other epiphytic species do not? Do N. rajah & N. ephippiata have similar rates of consumption?