Yeah because the knowledge to make game consoles (I mean computer science) hasn't had practical uses. And it's not like lasers were invented for the sole purpose of removing hair. Or that jet skis were a scientific breakthrough ("eureka! I have found a way to make a small single person boat! the nobel prize is mine!") I think a lot of these are byproducts of actually useful scientific research/advances. Like LSD was a byproduct of researching drugs for migraines (well it kinda worked anyway, one hit of LSD and you'll probably forget about whatever headache you were having)
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