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Recently, there have been several studies on the evolution of binary systemsusing historical data treated as facts in the chain of arguments. In this paperwe discuss six case studies of modern dwarf novae with suggested historicalcounterpart from the historical point of view as well as the derivedconsequences for the physics of close binary systems (the dwarf novae Z Cam andAT Cnc, the nebula in M22, and the possible Nova 101, Nova 483, and Nova 1437).We consider the historical Far Eastern reports and after a careful re-readingof the text we map the given information on the sky. In some cases, thepositions given in modern lists of classical nova-guest star-pairs turn out tobe wrong, or they have to be considered highly approximate: The historicalposition, in most cases, should be transformed into areas at the celestialsphere and not into point coordinates. Based on the correct information weconsider the consequences concerning the evolution of close binary systems.However, the result is that none of the cases of cataclysmic variablessuggested to have a historical counterpart can be (fully) supported. As theidentification of the historical record of observation with the CVs known todayturns out to be always uncertain, a potential historical observation alone maynot be relied on to draw conclusions on the evolution of binaries. Theevolution scenarios should be derived from astrophysical observation andmodelling only.

Which information can we derive from historical Far Eastern guest stars for modern research on novae and cataclysmic variables?