Akwai da dama ambato na wannan a cikin tarihi records da wallafe-wallafen na zamanin. Alal misali, a cikin Theaetetus, Plato ya ce cewa "Waɗannan mutane, a daya hannun, ko da yaushe magana a cikin gaggawa, ga gudãna ruwa urges su a kan". Wani ambaci ya auku a cikin Lucius Apuleius 'The Golden Ass: "The Clerk na Kotun fara bawling sake, wannan lokaci summoning babban shaida ga fitina ya bayyana. Up wani tsohon mutum, wanda ban sani ba. An gayyace shi ya yi magana muddin akwai ruwa a cikin agogo; wannan shi ne wani m duniya a cikin abin da ruwa da aka zuba ta hanyar wani funnel a cikin wuyansa, kuma daga abin da shi sannu a hankali ya tsere ta hanyar lafiya perforations a lokacin da zamanin BC. A Theaetetus, Plato ya ce cewa "Waɗannan mutane, a daya hannun, ko da yaushe magana a cikin sauri kara da sauri, domin da ruwa ya gudana a lokacin da ruwa ya gudana a kusa da ci gaba da kara yawan ruwa. Wannan ya sa shi ya zama mafi daidai a lokacin da na farko zamanin Girkawa
ruwa ya gudana da sauri