Garfinkel’s most important contribution is to show that humans ... construct mundane social order by consistently using practices to avoid recognizing how arbitrarily social order is actually put together. We keep up conventions, not because we believe in them, but because we studiously avoid questioning them. Garfinkel demonstrated this most dramatically in his breaching experiments, in which he forced people into situations that caused them to recognize indexicality (i.e., that they rely on tacit acceptance of what things mean contextually) and reflexivity (that there are infinite regresses of justifying one’s interpretations). Interestingly enough, the reactions of his subjects were always intensely emotional. Usually it was an emotional outburst: becoming nervous and jittery, shaken, displaying anxiety and sometimes shock (Garfinkel 1967, 44, 221–26) Sometimes it was depression, bewilderment, or anger at having been put in a situation where they constructed a reality they later discovered to be false. In short, when people have to recognize that they are tacitly constructing their social worlds, and in an arbitrary and conventional way, rather than simply reacting to a world that is objectively there, they show intense negative emotions.
Randall Collins, Interaction Ritual Chains (pp. 103-104)
the reference is to Garfinkel’s book Studies in Ethnomethodology
