n. A problem that can be reduced to just two factors; a problem that has only two solutions.
2003
We often like to view risk as a binary problem: That is, something is either safe or it's not.
1997
President Clinton works the Middle East as a binary problem of Israelis and Palestinians. But the Middle East is a treacherous mixture of algebra and geometry, not arithmetic: Hidden factors, tenebrous equations and whiplash angles thwart the best of intentions.
1995 (earliest)
He said he also expects Mr. Peters to propose amendments to the Winding Up Act that will allow regulators to step in and manage a troubled institution before it fails. "Under the present law, it's a binary problem for a company — it's either on or it's off," he said. "What we need is something to permit an orderly soft landing."