In which case would we see a bigger benefit from using LSH over the naive approach (brute-force pairwise comparison) to find similar pairs of documents?

the answer is you.

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?

that without the operating systems you would have to control and synchronize computer hardware.