seems like you're making it. keep going.
why is age a thing? why is time a thing? think. we created time. we made it a concept. imagine if time wasn't a thing. imagine how unorganized we'd be yet, so much happier. we don't even know what time is yet, we created it and we know nothing about it. what if we're in a cold desolate world, days and seasons repeat through intervals. yet we don't repeat. what if someone is controlling our 'time'. what if they pause it for a million years and nothing would've changed for us...
why is '18' a thing? when people are 18, they have a party of some sort. but when they're 36? no. not a single thought. they don't think of celebrating ever 18 years of there life even though people celebrate it the first time. (maybe because they're leaving for college. who knows?) they don't because they think it's stupid. and it is. however if they think it's stupid, how is celebrating the first 18 not stupid?
worded the last paragraph weirdly. sorry bout that.
