FN: (esp. with "by" or "due to") a random event.Bayoumi 's version can be challenged as well , since the mosque is close to the restaurant and Bayoumi had visited it , and the surrounding area , on multiple occasions , including twice within six weeks of February 1 . We do not know whether the lunch encounter occurred by chance or design .In Quinean terms , in an uncontrolled study , the observation statements ( about the patient 's condition ) and the theoretical statement ( about the efficacy of the treatment ) may be linked too tenuously along the radii of the web ; in the extreme case , the apparent linkage may be purely by chance .These results indicate boundaries that are significantly longer and more cohesive than is expected by chance .The bargains or at least more authentic and tasteful products are to be found far from these main tourist centers , in artisans ' workshops on the Giudecca , in the Dorsoduro behind the Zattere — to be hunted down or stumbled upon by chance .As stated previously , the selection of differentially expressed genes is essentially a search for outliers , i.e. gene data lying outside some standard distribution of differences relative to a control state , and which can not be ascribed to chance or natural variabilty .They involve Dada nose-thumbing , Expressionist brio , an American appreciation of pure funk , a flâneur 's eye for chance and juxtaposition in the streets , a sensualist 's feeling for the most outré kinds of texture , and a scopophiliac 's unquenchable thirst for images , all kinds , right now , from industrial logos to comic strips to postage stamps to Velázquez 's Rokeby Venus . ( He also , incidentally , has quite an ear , capable of doing more with a one - word title -- Rebus , Currency , Interview , Barge , Express -- than most writers . )In the very off chance that you come across archaeological finds such as ancient anchors , wine - jars , even sculpture , they must be reported to local municipal authorities .One possibility is that studies report different estimates of the single true relationship between a given pollutant and a health effect due to differences in study design , random chance , or other factors .