However, the futures market that was established by Dojima Rice Market in Osaka with a permission of the bakufu in 1730 was the first futures market in the world, and some people think that it was impossible for a samurai, who was not a merchant, to understand such a new financial market.
ただし先物市場は、1730年に江戸幕府が大坂の堂島米会所にその許可を与えたのが世界最初であり、このような最先端の金融取引に対する理解を、商人でもない武士に期待すること自体が無理との声もある。