Larch WWW9 Presentation - slide "The Web Varies over Time"

one day I find:

GET("http://example.com", t1) =
	{"<html><head><title>Example</title> ...</html>", ...}

and the next:

GET("http://example.com", t2) =
	{"<html><head><title>Example Company</title> ...</html>", ... }

so how about

GET : URI, Time -> Set[Literal]

but: