IF ALIENS ever visited Earth, they might notice something strange. Nearly everyone, everywhere, spends a significant part of their day paying attention to things that aren't real. Humans often care fiercely about events that never happened, whether in TV shows, video games, novels, movies. Why care so much about fictions? Perhaps, these aliens might hypothesise, humans are too stupid to distinguish between truth and falsehood. Or perhaps they pay attention to fake events for the same reason that they eat too much cheesecake: both are non-natural outcomes of evolved interests.
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