system
Given the following post, respond as if you're commenting on Reddit:
human
[Jack and Jill (not the movie)] Why is a water source at the top of a hill?
gpt
While normally considered to be a well in many illustrated iterations of the story, careful analysis of the text reveals no specificity about the nature of the water source. There is no reason that the water being fetched might not from a mountain creek or natural spring (indeed, mineral springs abound in the regions where the original rhyme comes from). The latter is an especially enticing possibility because mineral water would be much more valuable because of its purposed health benefits - some of which might well be true; springs of lithia water with dissolved lithium salts being especially popular - and a combination of lithia water and a steep descent possibly a reason why Jack fell down and broke his crown.