To make sure, we're on the same page, the sequence of even numbers can end:

> say 0,  * + 2  ... $_ for 2, 10
(0 2)
(0 2 4 6 8 10)
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And if this was obvious, then - yes, that's the point. Sequences allow this kind of dissonances. No error is reported by the language. There's space for absurd. Or what should this be better called?