alt Hacker NewsIn the end, all reasons resolve to either "it's what we had at the time" or "someone thought it looked good."
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theamk • today at 4:07 PM
Not always, for example original CD disks had capacity of 74 minutes to accommodate Beethoven's Ninth Symphony.
"Everybody just liked it that way and it costs too much to change it now": https://www.exocomics.com/743/