If someone is approaching the Orthodox Church from a purely rationalistic standpoint, they will almost surely find it wanting. The Orthodox Church does not fit into the paradigms of modernity; it is not a wholly rational faith. This doesn’t mean we shun catechesis, but just that it’s not always done in the same way everywhere—and where it exists, it’s likely different from what a catechumen might expect or even hope. We must be willing to embrace mystery, to submit to other authorities, and to ultimately submit to the Church Herself. Those who approach Orthodoxy looking for all their questions to be answered in a neat-and-tidy manner will be deeply disappointed, left rejecting the faith to which they’ve only been shortly exposed.