SR> It goes back to the invention of LPs and 45s.  Columbia invented the
 SR> LP  which ran at 33 1/3 RPM, and RCA invented the 45 around the same
 SR> time.  The 45 had the advantage of higher fidelity, but the LP was of
 SR> course  longer.  In he early years, LPs were mainly marketed towards
 SR> classical  music lovers (imagine listening to Beethoven's 9th on 78 RPM
 SR> records  which, like 45s, only allow roughly five minutes to a side),
 SR> and 45s  were marketed towards pop music.  The reason for the larger
 SR> hole in the  45 was simply a move by RCA to make the two types of
 SR> records even more  compatible.
 CR> I don't understand.  How do different hole sizes make records more
 CR> compatible?
Oops.  That was supposed to read "...to make the two types of records 
even more incompatible."
 
... When cryptography is outlawed, bayl bfynjf wirhm tolaq.
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