fly blind

Also found in: Thesaurus, Idioms.
ThesaurusAntonymsRelated WordsSynonymsLegend: blind - fly an airplane solely by relying on instruments
air travel, aviation, air - travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
aviate, pilot, fly - operate an airplane; "The pilot flew to Cuba"
References in periodicals archive ?
But they can only measure the experience for a limited set of users and locations and for a limited set of applications, so managers have to fly blind with all their other applications.
Brand advertisers as well as direct marketers cannot afford to fly blind.