Asymmetries in compound eyes may be associated with asymmetries in behaviour. Perturbation training can help improve gait asymmetries of the knee joint. To protect against postural asymmetries the use of supportive and protective devices may be necessary. Nevertheless, underlying structural asymmetries do exist. A theory of directional asymmetries in the human body is the axial twist hypothesis. This, according to Fillmore, explains the observed asymmetries in many lexical relations. Highly conspicuous directional asymmetries can be temporary ones. A wider range of reaction correspondences shapes is possible in 2x2 games with payoff asymmetries. The asymmetries between individuals have been categorized into three types of interactions. Initial asymmetries have also been confirmed in Type Ia supernovae through observation. Minimal forehead asymmetries are typically seen. They have been described as intentional, "symmetrical" asymmetries. "Asymmetries of perception," according to the report, are a major obstacle to strategic communications. Sex-dependent brain asymmetries are also common. Asymmetries on the stellar disk had been reported at different wavelengths.