five nines
 n.— «My phone line has been out—completely out, no dial tone—for 2 days since I discovered and reported the outage. If “five nines” were a guarantee, that is, if it had any reality to it at all, I could expect 100,000 days, or 274 years, of perfect service for each day my phone were out, or 548 years total.» —“Verizon owes me 1365 years of perfect service” by David S. Isenberg Isen.blog Apr. 7, 2006. (source: Double-Tongued Dictionary)

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