The government, which had not yet formed the policy of overthrowing the shogunate, could not possibly and even secretly allow them to go abroad in violation of shogunal isolationism.
倒幕方針をまだ持っていない藩政府が江戸幕府の鎖国の禁制を犯す海外留学を秘密裏にですら認める可能性は乏しかった。