Haiku such as "kyo" () may look like two syllables to English speakers but are in fact a single "on" (as well as a single syllable) in Japanese. In 1973, the Haiku Society of America noted that the norm for writers of haiku in English was to use 17 syllables, but they also noted a trend toward shorter haiku. Shorter haiku are very much more common in 21st century English haiku writing. Some translators of Japanese poetry have noted that about 12 syllables in English approximate the duration of 17 Japanese "on". Also in translations four lines is more appropriate for
Haiku third lines end-rhymed. Yasuda considered that haiku translated into English should utilize all of the poetic resources of the language. Yasuda's theory also includes the concept of a "haiku moment" based in personal experience, and provides the motive for writing a haiku (' an aesthestic moment' of a timeless feeling of enlightened harmony as the poet's nature and the environment are unified'). This notion of the haiku moment has resonated with haiku writers in English, even though the notion is not widely promoted in Japanese haiku.(See however, 'Shiki's Haiku Moments for Us Today' In 1958, "An Introduction to Haiku: An