I've been through one renovation too many know that this two-year time frame for completion is pie-in-the-sky malarkey.
We were called communists, imperialists, fascists, and (our favorite) "pie-in-the-sky open-border elitists."
“Your EPA is targeting Kentucky coal with pie-in-the-sky regulations,” she says in a message to the president.
"pastry," mid-14c. (probably older; piehus "bakery" is attested from late 12c.), from Medieval Latin pie "meat or fish enclosed in pastry" (c.1300), perhaps related to Medieval Latin pia "pie, pastry," also possibly connected with pica "magpie" (see pie (n.2)) on notion of the bird's habit of collecting miscellaneous objects. Figurative of "something to be shared out" by 1967.
According to OED, not known outside English, except Gaelic pighe, which is from English. In the Middle Ages, a pie had many ingredients, a pastry but one. Fruit pies began to appear c.1600. Figurative sense of "something easy" is from 1889. Pie-eyed "drunk" is from 1904. Phrase pie in the sky is 1911, from Joe Hill's Wobbly parody of hymns. Pieman is not attested earlier than the nursery rhyme "Simple Simon" (c.1820). Pie chart is from 1922.
"magpie," mid-13c. (late 12c. as a surname), from Old French pie (13c.), from Latin pica "magpie" (see magpie). In 16c., a wily pie was a "cunning person."
A preposterously optimistic goal: “The candidate says we can balance the budget by next year, but I think that's pie in the sky.”
: It was a bit of a pie-in-the-sky idea
The reward one will get for compliant behavior, later; hence wishful thinking or utopian fantasies
[1911+; fr a Wobbly expression of contempt for those who maintained that suffering and penury on earth would be compensated by bliss and luxury in heaven; the locus classicus is a 1911 parody of the hymn ''In the Sweet By and By,'' by the Wobbly martyr Joe Hill]