� Parallel, independent development and invention are at least as old as the monk, Mendel, who experimented with genetics and statistics. Twain went broke backing the Paige type-setter, because Paige kept dinking around with "improvements" so long that Mergenthaler beat him to the market with Linotype. Parallel development has always been very common in the wildcatting of cartridges.
� "Post hoc, ergo propter hoc" (after this, therefore because of this) has been recognized as a prominent total fallacy for a long, long time.
It is stupid, therefore, to assume that So-and-So-Two "stole" or copied So-and-So-One's cartridge because the later version is virtually or completely identical to the earlier version.
But logic, alas, has as little to do with the opinions of opinionated opiners as facts do � as many posts in this thread both prove and illustrate.
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