I roto i te reo o te symmetry: te wahi e taea te warewarehia te taumaha, ko te ahupūngao Lorentz invariant rite i roto i te pānga motuhake, kaua i te Galilei invariant rite i roto i te pūkaha tawhito. (Ko te symmetry tautuhi o pānga motuhake ko te rōpū Poincaré, e ngā translation, huringa, me te whakanui.) Ko te rerekētanga i waenganui i te rua riro nui ina mahi ki te tere whakatata i te tere o te marama, me te ki ngā āhuatanga pūngao-nui. Ki te Lorentz symmetry, tāpiri hanganga haere mai ki te tākaro. tautuhia ratou e te huinga o te marama cones (). tautuhia te whakapakoko-conusal he hanganga causal mo ia: he huinga o te kaupapa o te pānga motuhake, e kore e rite ki i roto i te wāhi motuhake ranei, e kore e rite ki i roto i te pānga motuhake, e kore e rite ki i roto i te huinga o te marama, e kore e taea te whakamahi i roto i te huinga o te marama, i roto i te huinga o
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