When considering history and origin, what must never be done is to judge by "gochie", and you must not always lose the attitude of thinking at the beginning.
For example, regarding the name of the bridge in Nihonbashi, Monoshiri Encyclopedia says, "There are various theories about the origin of the bridge name, but in the magazine "Mifunai Remarks" edited by the Shogunate, "This bridge, in the center of Edo, Since the process of each country is determined here, it is said that Nihonbashi is named because it is named." This explanation says, "There are various theories about the origin of the bridge name," and of course it is not an error. However, "Remarks in Gofu" is a geographical magazine compiled by the Shogunate in 1829 (1829).
Nihonbashi is said to have been built by Ieyasu Tokugawa in 1603 (1603) (page 26 of Monoshiri Encyclopedia). At the time of this erection, only about 10 years have passed since Ieyasu was admitted to the prefecture in 1590 (1590), and the surrounding area should have been a desolate area full of reeds and thinness (" Monoshiri Encyclopedia") Page 116). After nearly 230 years, it would be too violent to use only the geography compiled by "Okami" as the basis for the origin of the bridge name.
Yasaburo Ikeda stated in "Nihonbashi Private Note" as "My (Japan) Bridge Nakihara Theory".
（１） Nihonbashi is a poor bridge that was originally built over the Nihonbashi River (although it was not named at that time), and it was called "Nihonbashi" from the appearance of the bridge.
（２） As the town of Edo was built, it was remodeled finely, and in the meantime, it came to be said that Nihonbashi was Nihonbashi.
（３） In order for everyone to receive the name "Nihonbashi", which I said to anyone, Nihonbashi became bustling, the neighborhood became a representative land of Japan, and became the center of the whole country, and the starting point of Gokaido The name of "Nihonbashi" became more and more appropriate as it became.
――I wonder if such a path could be considered. (48)
In recent books, as is the case with Monoshiri Encyclopedia, the part of (1) is short, and it seems that many describe the background of (2) and (3) from the beginning. However, as Ikeda says, not only the name of the bridge, but also the name of the place is simple, straightforward, and intuitive in the first place, considering that the name of the bridge is (1) I think we should think that there was a stage.
