Programming Ruby 3.2 (5th Edition): B4.0 page 501, the start argument has to do

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@noelrappin

page 501, paragraph 4 (after title), line 2 :

Date instance—the start argument has to do . You’ll also often see Date.new(year, month day),

I don’t understand : the start argument has to do

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It’s a remnant of what became the paragraph before this describing what “start” does. Thanks!