In the "Rationale" section, SRFI wrote:

>  where drop and take are from SRFI 1. Implementations are encouraged
>  to implement these procedures without the extra allocations entailed
>  by drop.

IIUC, drop doesn't entail extra allocation. SRFI-1 pointed out that
"drop is exactly equivalent to performing i cdr operations on x", it
doesn't require 'drop' procedure to return a freshly allocated pairs, it
can just return the ith-cdr of original list.

I suspect this is a typo, it should be "without the extra allocations
entailed by take" because 'take' does required to return freshly
allocated pairs.

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Zihao / 閱卜錄