1. An information processing apparatus, comprising: a first information obtaining section configured to obtain a pathological image and a primary diagnosis result from a first terminal via a network, the first terminal being of a first user being a pathologist, the primary diagnosis result being a diagnosis result about the pathological image by the first user; an information providing section configured to provide the obtained pathological image and the primary diagnosis result to at least one second terminal via the network, the at least one second terminal being of at least one second user being a pathologist; a second information obtaining section configured to obtain a browsing history and an opinion of the second user from the second terminal via the network, the browsing history at least including information on a displayed area in the pathological image, the area being displayed based on operation by the second user when the second user observes the pathological image on a display unit of the second terminal, the opinion of the second user being about the primary diagnosis result based on observation of the pathological image by the second user; and a reliability score generating section configured to estimate the obtained browsing history based on a predetermined condition, and to generate a reliability score of the obtained opinion.